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Finding the Fourth Proportional to 83,451.60, 115,124.56 and 73,901.20

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Solution

The fourth proportional to 83,451.60, 115,124.56 and 73,901.20 is: 101,949.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,451.60 : 115,124.56 = 73,901.20 : x
  2. Step 2: Convert to fraction form
    83,451.60/115,124.56 = 73,901.20/x
  3. Step 3: Cross multiply
    83,451.60x = 115,124.56 × 73,901.20
  4. Step 4: Simplify right side
    83,451.60x = 8,507,843,133.47
  5. Step 5: Solve for x
    x = 8,507,843,133.47/83,451.60
  6. Step 6: Final answer
    x = 101,949.43

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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.