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Finding the Fourth Proportional to 71,747.60, 107,621.40 and 21,827.30

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Solution

The fourth proportional to 71,747.60, 107,621.40 and 21,827.30 is: 32,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,747.60 : 107,621.40 = 21,827.30 : x
  2. Step 2: Convert to fraction form
    71,747.60/107,621.40 = 21,827.30/x
  3. Step 3: Cross multiply
    71,747.60x = 107,621.40 × 21,827.30
  4. Step 4: Simplify right side
    71,747.60x = 2,349,084,584.22
  5. Step 5: Solve for x
    x = 2,349,084,584.22/71,747.60
  6. Step 6: Final answer
    x = 32,740.95

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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.