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Finding the Fourth Proportional to 48,519.30, 72,764.55 and 18,920.10

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Solution

The fourth proportional to 48,519.30, 72,764.55 and 18,920.10 is: 28,374.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,519.30 : 72,764.55 = 18,920.10 : x
  2. Step 2: Convert to fraction form
    48,519.30/72,764.55 = 18,920.10/x
  3. Step 3: Cross multiply
    48,519.30x = 72,764.55 × 18,920.10
  4. Step 4: Simplify right side
    48,519.30x = 1,376,712,562.46
  5. Step 5: Solve for x
    x = 1,376,712,562.46/48,519.30
  6. Step 6: Final answer
    x = 28,374.53

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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.