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Finding the Fourth Proportional to 75,275.57, 103,619.55 and 65,061.94

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Solution

The fourth proportional to 75,275.57, 103,619.55 and 65,061.94 is: 89,560.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,275.57 : 103,619.55 = 65,061.94 : x
  2. Step 2: Convert to fraction form
    75,275.57/103,619.55 = 65,061.94/x
  3. Step 3: Cross multiply
    75,275.57x = 103,619.55 × 65,061.94
  4. Step 4: Simplify right side
    75,275.57x = 6,741,688,944.93
  5. Step 5: Solve for x
    x = 6,741,688,944.93/75,275.57
  6. Step 6: Final answer
    x = 89,560.12

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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.