Home / 85,452,395.72-128,178,595.17-20,755,764.83

Finding the Fourth Proportional to 85,452,395.72, 128,178,595.17 and 20,755,764.83

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Solution

The fourth proportional to 85,452,395.72, 128,178,595.17 and 20,755,764.83 is: 31,133,647.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,452,395.72 : 128,178,595.17 = 20,755,764.83 : x
  2. Step 2: Convert to fraction form
    85,452,395.72/128,178,595.17 = 20,755,764.83/x
  3. Step 3: Cross multiply
    85,452,395.72x = 128,178,595.17 × 20,755,764.83
  4. Step 4: Simplify right side
    85,452,395.72x = 2,660,444,777,908,740.50
  5. Step 5: Solve for x
    x = 2,660,444,777,908,740.50/85,452,395.72
  6. Step 6: Final answer
    x = 31,133,647.64

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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.