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Finding the Fourth Proportional to 78,076, 117,113.78 and 60,332.48

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Solution

The fourth proportional to 78,076, 117,113.78 and 60,332.48 is: 90,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,076 : 117,113.78 = 60,332.48 : x
  2. Step 2: Convert to fraction form
    78,076/117,113.78 = 60,332.48/x
  3. Step 3: Cross multiply
    78,076x = 117,113.78 × 60,332.48
  4. Step 4: Simplify right side
    78,076x = 7,065,764,789.57
  5. Step 5: Solve for x
    x = 7,065,764,789.57/78,076
  6. Step 6: Final answer
    x = 90,498.55

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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.