Home / 78,519.18-117,721.34-25,180.79

Finding the Fourth Proportional to 78,519.18, 117,721.34 and 25,180.79

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Solution

The fourth proportional to 78,519.18, 117,721.34 and 25,180.79 is: 37,752.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,519.18 : 117,721.34 = 25,180.79 : x
  2. Step 2: Convert to fraction form
    78,519.18/117,721.34 = 25,180.79/x
  3. Step 3: Cross multiply
    78,519.18x = 117,721.34 × 25,180.79
  4. Step 4: Simplify right side
    78,519.18x = 2,964,316,341.06
  5. Step 5: Solve for x
    x = 2,964,316,341.06/78,519.18
  6. Step 6: Final answer
    x = 37,752.77

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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.