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Finding the Fourth Proportional to 52,854.50, 72,932.52 and 28,974.90

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Solution

The fourth proportional to 52,854.50, 72,932.52 and 28,974.90 is: 39,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,854.50 : 72,932.52 = 28,974.90 : x
  2. Step 2: Convert to fraction form
    52,854.50/72,932.52 = 28,974.90/x
  3. Step 3: Cross multiply
    52,854.50x = 72,932.52 × 28,974.90
  4. Step 4: Simplify right side
    52,854.50x = 2,113,212,473.75
  5. Step 5: Solve for x
    x = 2,113,212,473.75/52,854.50
  6. Step 6: Final answer
    x = 39,981.69

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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.