Home / 78,133.76-117,207.84-25,543.52

Finding the Fourth Proportional to 78,133.76, 117,207.84 and 25,543.52

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Solution

The fourth proportional to 78,133.76, 117,207.84 and 25,543.52 is: 38,317.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.76 : 117,207.84 = 25,543.52 : x
  2. Step 2: Convert to fraction form
    78,133.76/117,207.84 = 25,543.52/x
  3. Step 3: Cross multiply
    78,133.76x = 117,207.84 × 25,543.52
  4. Step 4: Simplify right side
    78,133.76x = 2,993,900,805.20
  5. Step 5: Solve for x
    x = 2,993,900,805.20/78,133.76
  6. Step 6: Final answer
    x = 38,317.63

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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.