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Finding the Fourth Proportional to 71,424.65, 107,071.35 and 38,167.67

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Solution

The fourth proportional to 71,424.65, 107,071.35 and 38,167.67 is: 57,216.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,424.65 : 107,071.35 = 38,167.67 : x
  2. Step 2: Convert to fraction form
    71,424.65/107,071.35 = 38,167.67/x
  3. Step 3: Cross multiply
    71,424.65x = 107,071.35 × 38,167.67
  4. Step 4: Simplify right side
    71,424.65x = 4,086,663,417.90
  5. Step 5: Solve for x
    x = 4,086,663,417.90/71,424.65
  6. Step 6: Final answer
    x = 57,216.43

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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.