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Finding the Fourth Proportional to 67,345.08, 101,028.92 and 20,587

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Solution

The fourth proportional to 67,345.08, 101,028.92 and 20,587 is: 30,883.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,345.08 : 101,028.92 = 20,587 : x
  2. Step 2: Convert to fraction form
    67,345.08/101,028.92 = 20,587/x
  3. Step 3: Cross multiply
    67,345.08x = 101,028.92 × 20,587
  4. Step 4: Simplify right side
    67,345.08x = 2,079,882,376.04
  5. Step 5: Solve for x
    x = 2,079,882,376.04/67,345.08
  6. Step 6: Final answer
    x = 30,883.95

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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.