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Finding the Fourth Proportional to 60,279.99, 90,426.06 and 15,909.81

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Solution

The fourth proportional to 60,279.99, 90,426.06 and 15,909.81 is: 23,866.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,279.99 : 90,426.06 = 15,909.81 : x
  2. Step 2: Convert to fraction form
    60,279.99/90,426.06 = 15,909.81/x
  3. Step 3: Cross multiply
    60,279.99x = 90,426.06 × 15,909.81
  4. Step 4: Simplify right side
    60,279.99x = 1,438,661,433.65
  5. Step 5: Solve for x
    x = 1,438,661,433.65/60,279.99
  6. Step 6: Final answer
    x = 23,866.32

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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.