Home / 71,956.28-99,299.76-39,690.17

Finding the Fourth Proportional to 71,956.28, 99,299.76 and 39,690.17

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Solution

The fourth proportional to 71,956.28, 99,299.76 and 39,690.17 is: 54,772.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.28 : 99,299.76 = 39,690.17 : x
  2. Step 2: Convert to fraction form
    71,956.28/99,299.76 = 39,690.17/x
  3. Step 3: Cross multiply
    71,956.28x = 99,299.76 × 39,690.17
  4. Step 4: Simplify right side
    71,956.28x = 3,941,224,603.61
  5. Step 5: Solve for x
    x = 3,941,224,603.61/71,956.28
  6. Step 6: Final answer
    x = 54,772.49

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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.