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Finding the Fourth Proportional to 60,517.66, 90,776.90 and 21,074.65

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Solution

The fourth proportional to 60,517.66, 90,776.90 and 21,074.65 is: 31,612.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,517.66 : 90,776.90 = 21,074.65 : x
  2. Step 2: Convert to fraction form
    60,517.66/90,776.90 = 21,074.65/x
  3. Step 3: Cross multiply
    60,517.66x = 90,776.90 × 21,074.65
  4. Step 4: Simplify right side
    60,517.66x = 1,913,091,395.59
  5. Step 5: Solve for x
    x = 1,913,091,395.59/60,517.66
  6. Step 6: Final answer
    x = 31,612.12

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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.