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Finding the Fourth Proportional to 120,572.90, 180,882.03 and 48,531.32

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Solution

The fourth proportional to 120,572.90, 180,882.03 and 48,531.32 is: 72,806.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,572.90 : 180,882.03 = 48,531.32 : x
  2. Step 2: Convert to fraction form
    120,572.90/180,882.03 = 48,531.32/x
  3. Step 3: Cross multiply
    120,572.90x = 180,882.03 × 48,531.32
  4. Step 4: Simplify right side
    120,572.90x = 8,778,443,680.18
  5. Step 5: Solve for x
    x = 8,778,443,680.18/120,572.90
  6. Step 6: Final answer
    x = 72,806.11

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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.