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Finding the Fourth Proportional to 93,382.31, 128,909.33 and 63,259.11

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Solution

The fourth proportional to 93,382.31, 128,909.33 and 63,259.11 is: 87,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,382.31 : 128,909.33 = 63,259.11 : x
  2. Step 2: Convert to fraction form
    93,382.31/128,909.33 = 63,259.11/x
  3. Step 3: Cross multiply
    93,382.31x = 128,909.33 × 63,259.11
  4. Step 4: Simplify right side
    93,382.31x = 8,154,689,170.20
  5. Step 5: Solve for x
    x = 8,154,689,170.20/93,382.31
  6. Step 6: Final answer
    x = 87,325.85

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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.