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Finding the Fourth Proportional to 71,316.48, 107,039.52 and 38,064.90

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Solution

The fourth proportional to 71,316.48, 107,039.52 and 38,064.90 is: 57,131.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,316.48 : 107,039.52 = 38,064.90 : x
  2. Step 2: Convert to fraction form
    71,316.48/107,039.52 = 38,064.90/x
  3. Step 3: Cross multiply
    71,316.48x = 107,039.52 × 38,064.90
  4. Step 4: Simplify right side
    71,316.48x = 4,074,448,624.85
  5. Step 5: Solve for x
    x = 4,074,448,624.85/71,316.48
  6. Step 6: Final answer
    x = 57,131.94

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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.