Home / 78,108.56-117,180.88-25,521.92

Finding the Fourth Proportional to 78,108.56, 117,180.88 and 25,521.92

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Solution

The fourth proportional to 78,108.56, 117,180.88 and 25,521.92 is: 38,288.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,108.56 : 117,180.88 = 25,521.92 : x
  2. Step 2: Convert to fraction form
    78,108.56/117,180.88 = 25,521.92/x
  3. Step 3: Cross multiply
    78,108.56x = 117,180.88 × 25,521.92
  4. Step 4: Simplify right side
    78,108.56x = 2,990,681,044.89
  5. Step 5: Solve for x
    x = 2,990,681,044.89/78,108.56
  6. Step 6: Final answer
    x = 38,288.77

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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.