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Finding the Fourth Proportional to 71,588.86, 98,783.68 and 39,753.42

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Solution

The fourth proportional to 71,588.86, 98,783.68 and 39,753.42 is: 54,854.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,588.86 : 98,783.68 = 39,753.42 : x
  2. Step 2: Convert to fraction form
    71,588.86/98,783.68 = 39,753.42/x
  3. Step 3: Cross multiply
    71,588.86x = 98,783.68 × 39,753.42
  4. Step 4: Simplify right side
    71,588.86x = 3,926,989,120.19
  5. Step 5: Solve for x
    x = 3,926,989,120.19/71,588.86
  6. Step 6: Final answer
    x = 54,854.75

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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.