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Finding the Fourth Proportional to 71,526.88, 107,291.13 and 21,607.39

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Solution

The fourth proportional to 71,526.88, 107,291.13 and 21,607.39 is: 32,411.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,526.88 : 107,291.13 = 21,607.39 : x
  2. Step 2: Convert to fraction form
    71,526.88/107,291.13 = 21,607.39/x
  3. Step 3: Cross multiply
    71,526.88x = 107,291.13 × 21,607.39
  4. Step 4: Simplify right side
    71,526.88x = 2,318,281,289.45
  5. Step 5: Solve for x
    x = 2,318,281,289.45/71,526.88
  6. Step 6: Final answer
    x = 32,411.33

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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.