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Finding the Fourth Proportional to 73,280.40, 109,920.60 and 55,565.70

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Solution

The fourth proportional to 73,280.40, 109,920.60 and 55,565.70 is: 83,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,280.40 : 109,920.60 = 55,565.70 : x
  2. Step 2: Convert to fraction form
    73,280.40/109,920.60 = 55,565.70/x
  3. Step 3: Cross multiply
    73,280.40x = 109,920.60 × 55,565.70
  4. Step 4: Simplify right side
    73,280.40x = 6,107,815,083.42
  5. Step 5: Solve for x
    x = 6,107,815,083.42/73,280.40
  6. Step 6: Final answer
    x = 83,348.55

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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.