Home / 85,421,124,019.24-128,156,565,660.69-38,246,565,500.83

Finding the Fourth Proportional to 85,421,124,019.24, 128,156,565,660.69 and 38,246,565,500.83

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Solution

The fourth proportional to 85,421,124,019.24, 128,156,565,660.69 and 38,246,565,500.83 is: 57,380,987,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,421,124,019.24 : 128,156,565,660.69 = 38,246,565,500.83 : x
  2. Step 2: Convert to fraction form
    85,421,124,019.24/128,156,565,660.69 = 38,246,565,500.83/x
  3. Step 3: Cross multiply
    85,421,124,019.24x = 128,156,565,660.69 × 38,246,565,500.83
  4. Step 4: Simplify right side
    85,421,124,019.24x = 4,901,548,482,903,000,743,936
  5. Step 5: Solve for x
    x = 4,901,548,482,903,000,743,936/85,421,124,019.24
  6. Step 6: Final answer
    x = 57,380,987,890.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.