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Finding the Fourth Proportional to 71,410.49, 107,116.11 and 21,490.24

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Solution

The fourth proportional to 71,410.49, 107,116.11 and 21,490.24 is: 32,235.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,410.49 : 107,116.11 = 21,490.24 : x
  2. Step 2: Convert to fraction form
    71,410.49/107,116.11 = 21,490.24/x
  3. Step 3: Cross multiply
    71,410.49x = 107,116.11 × 21,490.24
  4. Step 4: Simplify right side
    71,410.49x = 2,301,951,394.04
  5. Step 5: Solve for x
    x = 2,301,951,394.04/71,410.49
  6. Step 6: Final answer
    x = 32,235.48

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Double scale
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Similar ratio
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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.