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Finding the Fourth Proportional to 78,609.52, 117,927.08 and 23,211.12

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Solution

The fourth proportional to 78,609.52, 117,927.08 and 23,211.12 is: 34,820.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,609.52 : 117,927.08 = 23,211.12 : x
  2. Step 2: Convert to fraction form
    78,609.52/117,927.08 = 23,211.12/x
  3. Step 3: Cross multiply
    78,609.52x = 117,927.08 × 23,211.12
  4. Step 4: Simplify right side
    78,609.52x = 2,737,219,605.13
  5. Step 5: Solve for x
    x = 2,737,219,605.13/78,609.52
  6. Step 6: Final answer
    x = 34,820.46

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Similar ratio
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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.