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Finding the Fourth Proportional to 71,617.95, 107,432.40 and 21,702.18

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Solution

The fourth proportional to 71,617.95, 107,432.40 and 21,702.18 is: 32,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,617.95 : 107,432.40 = 21,702.18 : x
  2. Step 2: Convert to fraction form
    71,617.95/107,432.40 = 21,702.18/x
  3. Step 3: Cross multiply
    71,617.95x = 107,432.40 × 21,702.18
  4. Step 4: Simplify right side
    71,617.95x = 2,331,517,282.63
  5. Step 5: Solve for x
    x = 2,331,517,282.63/71,617.95
  6. Step 6: Final answer
    x = 32,554.93

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1.5x scale

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.