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Finding the Fourth Proportional to 60,687.99, 91,029.15 and 21,253.95

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Solution

The fourth proportional to 60,687.99, 91,029.15 and 21,253.95 is: 31,879.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,687.99 : 91,029.15 = 21,253.95 : x
  2. Step 2: Convert to fraction form
    60,687.99/91,029.15 = 21,253.95/x
  3. Step 3: Cross multiply
    60,687.99x = 91,029.15 × 21,253.95
  4. Step 4: Simplify right side
    60,687.99x = 1,934,729,002.64
  5. Step 5: Solve for x
    x = 1,934,729,002.64/60,687.99
  6. Step 6: Final answer
    x = 31,879.93

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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.