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Finding the Fourth Proportional to 78,765.79, 118,113.14 and 22,593.15

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Solution

The fourth proportional to 78,765.79, 118,113.14 and 22,593.15 is: 33,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765.79 : 118,113.14 = 22,593.15 : x
  2. Step 2: Convert to fraction form
    78,765.79/118,113.14 = 22,593.15/x
  3. Step 3: Cross multiply
    78,765.79x = 118,113.14 × 22,593.15
  4. Step 4: Simplify right side
    78,765.79x = 2,668,547,945.47
  5. Step 5: Solve for x
    x = 2,668,547,945.47/78,765.79
  6. Step 6: Final answer
    x = 33,879.53

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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.