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Finding the Fourth Proportional to 104,478.62, 156,728.86 and 34,363.40

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Solution

The fourth proportional to 104,478.62, 156,728.86 and 34,363.40 is: 51,548.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,478.62 : 156,728.86 = 34,363.40 : x
  2. Step 2: Convert to fraction form
    104,478.62/156,728.86 = 34,363.40/x
  3. Step 3: Cross multiply
    104,478.62x = 156,728.86 × 34,363.40
  4. Step 4: Simplify right side
    104,478.62x = 5,385,735,638.17
  5. Step 5: Solve for x
    x = 5,385,735,638.17/104,478.62
  6. Step 6: Final answer
    x = 51,548.69

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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.