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Finding the Fourth Proportional to 63,346.86, 87,404.97 and 40,385.41

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Solution

The fourth proportional to 63,346.86, 87,404.97 and 40,385.41 is: 55,723.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,346.86 : 87,404.97 = 40,385.41 : x
  2. Step 2: Convert to fraction form
    63,346.86/87,404.97 = 40,385.41/x
  3. Step 3: Cross multiply
    63,346.86x = 87,404.97 × 40,385.41
  4. Step 4: Simplify right side
    63,346.86x = 3,529,885,728.25
  5. Step 5: Solve for x
    x = 3,529,885,728.25/63,346.86
  6. Step 6: Final answer
    x = 55,723.14

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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.