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Finding the Fourth Proportional to 60,125.16, 90,127.68 and 28,479

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Solution

The fourth proportional to 60,125.16, 90,127.68 and 28,479 is: 42,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,125.16 : 90,127.68 = 28,479 : x
  2. Step 2: Convert to fraction form
    60,125.16/90,127.68 = 28,479/x
  3. Step 3: Cross multiply
    60,125.16x = 90,127.68 × 28,479
  4. Step 4: Simplify right side
    60,125.16x = 2,566,746,198.72
  5. Step 5: Solve for x
    x = 2,566,746,198.72/60,125.16
  6. Step 6: Final answer
    x = 42,690.05

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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.