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Finding the Fourth Proportional to 72,463.97, 100,000.13 and 40,632.19

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Solution

The fourth proportional to 72,463.97, 100,000.13 and 40,632.19 is: 56,072.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,463.97 : 100,000.13 = 40,632.19 : x
  2. Step 2: Convert to fraction form
    72,463.97/100,000.13 = 40,632.19/x
  3. Step 3: Cross multiply
    72,463.97x = 100,000.13 × 40,632.19
  4. Step 4: Simplify right side
    72,463.97x = 4,063,223,829.02
  5. Step 5: Solve for x
    x = 4,063,223,829.02/72,463.97
  6. Step 6: Final answer
    x = 56,072.33

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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.