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Finding the Fourth Proportional to 74,520.92, 111,781.28 and 19,116.92

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Solution

The fourth proportional to 74,520.92, 111,781.28 and 19,116.92 is: 28,675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520.92 : 111,781.28 = 19,116.92 : x
  2. Step 2: Convert to fraction form
    74,520.92/111,781.28 = 19,116.92/x
  3. Step 3: Cross multiply
    74,520.92x = 111,781.28 × 19,116.92
  4. Step 4: Simplify right side
    74,520.92x = 2,136,913,787.26
  5. Step 5: Solve for x
    x = 2,136,913,787.26/74,520.92
  6. Step 6: Final answer
    x = 28,675.35

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1.5x scale

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.