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Finding the Fourth Proportional to 66,980.52, 92,444.49 and 38,702.61

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Solution

The fourth proportional to 66,980.52, 92,444.49 and 38,702.61 is: 53,416.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,980.52 : 92,444.49 = 38,702.61 : x
  2. Step 2: Convert to fraction form
    66,980.52/92,444.49 = 38,702.61/x
  3. Step 3: Cross multiply
    66,980.52x = 92,444.49 × 38,702.61
  4. Step 4: Simplify right side
    66,980.52x = 3,577,843,043.12
  5. Step 5: Solve for x
    x = 3,577,843,043.12/66,980.52
  6. Step 6: Final answer
    x = 53,416.17

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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.