Home / 71,178.40-98,231.28-39,346.68

Finding the Fourth Proportional to 71,178.40, 98,231.28 and 39,346.68

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Solution

The fourth proportional to 71,178.40, 98,231.28 and 39,346.68 is: 54,301.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,178.40 : 98,231.28 = 39,346.68 : x
  2. Step 2: Convert to fraction form
    71,178.40/98,231.28 = 39,346.68/x
  3. Step 3: Cross multiply
    71,178.40x = 98,231.28 × 39,346.68
  4. Step 4: Simplify right side
    71,178.40x = 3,865,074,740.15
  5. Step 5: Solve for x
    x = 3,865,074,740.15/71,178.40
  6. Step 6: Final answer
    x = 54,301.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.