Home / 72,333.28-99,821.53-41,287.90

Finding the Fourth Proportional to 72,333.28, 99,821.53 and 41,287.90

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Solution

The fourth proportional to 72,333.28, 99,821.53 and 41,287.90 is: 56,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,333.28 : 99,821.53 = 41,287.90 : x
  2. Step 2: Convert to fraction form
    72,333.28/99,821.53 = 41,287.90/x
  3. Step 3: Cross multiply
    72,333.28x = 99,821.53 × 41,287.90
  4. Step 4: Simplify right side
    72,333.28x = 4,121,420,849.38
  5. Step 5: Solve for x
    x = 4,121,420,849.38/72,333.28
  6. Step 6: Final answer
    x = 56,978.21

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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.