Home / 72,468.20-100,006.13-40,637.12

Finding the Fourth Proportional to 72,468.20, 100,006.13 and 40,637.12

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Solution

The fourth proportional to 72,468.20, 100,006.13 and 40,637.12 is: 56,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,468.20 : 100,006.13 = 40,637.12 : x
  2. Step 2: Convert to fraction form
    72,468.20/100,006.13 = 40,637.12/x
  3. Step 3: Cross multiply
    72,468.20x = 100,006.13 × 40,637.12
  4. Step 4: Simplify right side
    72,468.20x = 4,063,961,105.55
  5. Step 5: Solve for x
    x = 4,063,961,105.55/72,468.20
  6. Step 6: Final answer
    x = 56,079.23

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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.