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Finding the Fourth Proportional to 83,723.60, 125,585.40 and 72,448.40

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Solution

The fourth proportional to 83,723.60, 125,585.40 and 72,448.40 is: 108,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,723.60 : 125,585.40 = 72,448.40 : x
  2. Step 2: Convert to fraction form
    83,723.60/125,585.40 = 72,448.40/x
  3. Step 3: Cross multiply
    83,723.60x = 125,585.40 × 72,448.40
  4. Step 4: Simplify right side
    83,723.60x = 9,098,461,293.36
  5. Step 5: Solve for x
    x = 9,098,461,293.36/83,723.60
  6. Step 6: Final answer
    x = 108,672.60

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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.