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Finding the Fourth Proportional to 99,651.71, 137,441.52 and 63,845.12

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Solution

The fourth proportional to 99,651.71, 137,441.52 and 63,845.12 is: 88,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651.71 : 137,441.52 = 63,845.12 : x
  2. Step 2: Convert to fraction form
    99,651.71/137,441.52 = 63,845.12/x
  3. Step 3: Cross multiply
    99,651.71x = 137,441.52 × 63,845.12
  4. Step 4: Simplify right side
    99,651.71x = 8,774,969,650.17
  5. Step 5: Solve for x
    x = 8,774,969,650.17/99,651.71
  6. Step 6: Final answer
    x = 88,056.39

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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.