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Finding the Fourth Proportional to 71,639.57, 107,459.36 and 22,391.57

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Solution

The fourth proportional to 71,639.57, 107,459.36 and 22,391.57 is: 33,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,639.57 : 107,459.36 = 22,391.57 : x
  2. Step 2: Convert to fraction form
    71,639.57/107,459.36 = 22,391.57/x
  3. Step 3: Cross multiply
    71,639.57x = 107,459.36 × 22,391.57
  4. Step 4: Simplify right side
    71,639.57x = 2,406,183,132.34
  5. Step 5: Solve for x
    x = 2,406,183,132.34/71,639.57
  6. Step 6: Final answer
    x = 33,587.35

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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.