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Finding the Fourth Proportional to 66,468.80, 99,663.06 and 26,493.95

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Solution

The fourth proportional to 66,468.80, 99,663.06 and 26,493.95 is: 39,724.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,468.80 : 99,663.06 = 26,493.95 : x
  2. Step 2: Convert to fraction form
    66,468.80/99,663.06 = 26,493.95/x
  3. Step 3: Cross multiply
    66,468.80x = 99,663.06 × 26,493.95
  4. Step 4: Simplify right side
    66,468.80x = 2,640,468,128.49
  5. Step 5: Solve for x
    x = 2,640,468,128.49/66,468.80
  6. Step 6: Final answer
    x = 39,724.93

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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.