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Finding the Fourth Proportional to 78,444.28, 118,093.28 and 71,469.14

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Solution

The fourth proportional to 78,444.28, 118,093.28 and 71,469.14 is: 107,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,444.28 : 118,093.28 = 71,469.14 : x
  2. Step 2: Convert to fraction form
    78,444.28/118,093.28 = 71,469.14/x
  3. Step 3: Cross multiply
    78,444.28x = 118,093.28 × 71,469.14
  4. Step 4: Simplify right side
    78,444.28x = 8,440,024,213.57
  5. Step 5: Solve for x
    x = 8,440,024,213.57/78,444.28
  6. Step 6: Final answer
    x = 107,592.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.