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Finding the Fourth Proportional to 66,159.80, 91,280.42 and 37,474.91

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Solution

The fourth proportional to 66,159.80, 91,280.42 and 37,474.91 is: 51,703.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,159.80 : 91,280.42 = 37,474.91 : x
  2. Step 2: Convert to fraction form
    66,159.80/91,280.42 = 37,474.91/x
  3. Step 3: Cross multiply
    66,159.80x = 91,280.42 × 37,474.91
  4. Step 4: Simplify right side
    66,159.80x = 3,420,725,363.32
  5. Step 5: Solve for x
    x = 3,420,725,363.32/66,159.80
  6. Step 6: Final answer
    x = 51,703.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.