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Finding the Fourth Proportional to 103,959, 156,007.62 and 38,295

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Solution

The fourth proportional to 103,959, 156,007.62 and 38,295 is: 57,467.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,959 : 156,007.62 = 38,295 : x
  2. Step 2: Convert to fraction form
    103,959/156,007.62 = 38,295/x
  3. Step 3: Cross multiply
    103,959x = 156,007.62 × 38,295
  4. Step 4: Simplify right side
    103,959x = 5,974,311,807.90
  5. Step 5: Solve for x
    x = 5,974,311,807.90/103,959
  6. Step 6: Final answer
    x = 57,467.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.