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Finding the Fourth Proportional to 78,472.76, 108,287.56 and 44,015.60

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Solution

The fourth proportional to 78,472.76, 108,287.56 and 44,015.60 is: 60,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,472.76 : 108,287.56 = 44,015.60 : x
  2. Step 2: Convert to fraction form
    78,472.76/108,287.56 = 44,015.60/x
  3. Step 3: Cross multiply
    78,472.76x = 108,287.56 × 44,015.60
  4. Step 4: Simplify right side
    78,472.76x = 4,766,341,287.12
  5. Step 5: Solve for x
    x = 4,766,341,287.12/78,472.76
  6. Step 6: Final answer
    x = 60,738.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.