Home / 85,432.12-128,009.74-52,050.92

Finding the Fourth Proportional to 85,432.12, 128,009.74 and 52,050.92

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Solution

The fourth proportional to 85,432.12, 128,009.74 and 52,050.92 is: 77,992.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,432.12 : 128,009.74 = 52,050.92 : x
  2. Step 2: Convert to fraction form
    85,432.12/128,009.74 = 52,050.92/x
  3. Step 3: Cross multiply
    85,432.12x = 128,009.74 × 52,050.92
  4. Step 4: Simplify right side
    85,432.12x = 6,663,024,735.96
  5. Step 5: Solve for x
    x = 6,663,024,735.96/85,432.12
  6. Step 6: Final answer
    x = 77,992.03

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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.