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Finding the Fourth Proportional to 71,104.80, 106,632.48 and 39,562.80

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Solution

The fourth proportional to 71,104.80, 106,632.48 and 39,562.80 is: 59,330.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,104.80 : 106,632.48 = 39,562.80 : x
  2. Step 2: Convert to fraction form
    71,104.80/106,632.48 = 39,562.80/x
  3. Step 3: Cross multiply
    71,104.80x = 106,632.48 × 39,562.80
  4. Step 4: Simplify right side
    71,104.80x = 4,218,679,479.74
  5. Step 5: Solve for x
    x = 4,218,679,479.74/71,104.80
  6. Step 6: Final answer
    x = 59,330.45

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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.