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Finding the Fourth Proportional to 63,390.80, 87,386.12 and 48,257.08

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Solution

The fourth proportional to 63,390.80, 87,386.12 and 48,257.08 is: 66,523.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,390.80 : 87,386.12 = 48,257.08 : x
  2. Step 2: Convert to fraction form
    63,390.80/87,386.12 = 48,257.08/x
  3. Step 3: Cross multiply
    63,390.80x = 87,386.12 × 48,257.08
  4. Step 4: Simplify right side
    63,390.80x = 4,216,998,983.73
  5. Step 5: Solve for x
    x = 4,216,998,983.73/63,390.80
  6. Step 6: Final answer
    x = 66,523.83

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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.