Home / 78,214.76-117,344.00-25,661.15

Finding the Fourth Proportional to 78,214.76, 117,344.00 and 25,661.15

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Solution

The fourth proportional to 78,214.76, 117,344.00 and 25,661.15 is: 38,498.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,214.76 : 117,344.00 = 25,661.15 : x
  2. Step 2: Convert to fraction form
    78,214.76/117,344.00 = 25,661.15/x
  3. Step 3: Cross multiply
    78,214.76x = 117,344.00 × 25,661.15
  4. Step 4: Simplify right side
    78,214.76x = 3,011,181,463.03
  5. Step 5: Solve for x
    x = 3,011,181,463.03/78,214.76
  6. Step 6: Final answer
    x = 38,498.89

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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.