Home / 78,372.17-108,153.56-42,562.19

Finding the Fourth Proportional to 78,372.17, 108,153.56 and 42,562.19

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Solution

The fourth proportional to 78,372.17, 108,153.56 and 42,562.19 is: 58,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372.17 : 108,153.56 = 42,562.19 : x
  2. Step 2: Convert to fraction form
    78,372.17/108,153.56 = 42,562.19/x
  3. Step 3: Cross multiply
    78,372.17x = 108,153.56 × 42,562.19
  4. Step 4: Simplify right side
    78,372.17x = 4,603,251,935.53
  5. Step 5: Solve for x
    x = 4,603,251,935.53/78,372.17
  6. Step 6: Final answer
    x = 58,735.80

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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.