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Finding the Fourth Proportional to 71,327.43, 107,001.54 and 21,411.45

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Solution

The fourth proportional to 71,327.43, 107,001.54 and 21,411.45 is: 32,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,327.43 : 107,001.54 = 21,411.45 : x
  2. Step 2: Convert to fraction form
    71,327.43/107,001.54 = 21,411.45/x
  3. Step 3: Cross multiply
    71,327.43x = 107,001.54 × 21,411.45
  4. Step 4: Simplify right side
    71,327.43x = 2,291,058,123.63
  5. Step 5: Solve for x
    x = 2,291,058,123.63/71,327.43
  6. Step 6: Final answer
    x = 32,120.30

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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.