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Finding the Fourth Proportional to 75,276.57, 103,620.93 and 65,062.95

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Solution

The fourth proportional to 75,276.57, 103,620.93 and 65,062.95 is: 89,561.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,276.57 : 103,620.93 = 65,062.95 : x
  2. Step 2: Convert to fraction form
    75,276.57/103,620.93 = 65,062.95/x
  3. Step 3: Cross multiply
    75,276.57x = 103,620.93 × 65,062.95
  4. Step 4: Simplify right side
    75,276.57x = 6,741,883,387.54
  5. Step 5: Solve for x
    x = 6,741,883,387.54/75,276.57
  6. Step 6: Final answer
    x = 89,561.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.