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Finding the Fourth Proportional to 56,683.92, 78,226.92 and 31,532.88

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Solution

The fourth proportional to 56,683.92, 78,226.92 and 31,532.88 is: 43,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,683.92 : 78,226.92 = 31,532.88 : x
  2. Step 2: Convert to fraction form
    56,683.92/78,226.92 = 31,532.88/x
  3. Step 3: Cross multiply
    56,683.92x = 78,226.92 × 31,532.88
  4. Step 4: Simplify right side
    56,683.92x = 2,466,720,081.13
  5. Step 5: Solve for x
    x = 2,466,720,081.13/56,683.92
  6. Step 6: Final answer
    x = 43,517.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.