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Finding the Fourth Proportional to 40,430.80, 60,646.20 and 36,737.20

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Solution

The fourth proportional to 40,430.80, 60,646.20 and 36,737.20 is: 55,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,430.80 : 60,646.20 = 36,737.20 : x
  2. Step 2: Convert to fraction form
    40,430.80/60,646.20 = 36,737.20/x
  3. Step 3: Cross multiply
    40,430.80x = 60,646.20 × 36,737.20
  4. Step 4: Simplify right side
    40,430.80x = 2,227,971,578.64
  5. Step 5: Solve for x
    x = 2,227,971,578.64/40,430.80
  6. Step 6: Final answer
    x = 55,105.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.