Home / 89,531.15-123,549.64-51,287.81

Finding the Fourth Proportional to 89,531.15, 123,549.64 and 51,287.81

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Solution

The fourth proportional to 89,531.15, 123,549.64 and 51,287.81 is: 70,775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,531.15 : 123,549.64 = 51,287.81 : x
  2. Step 2: Convert to fraction form
    89,531.15/123,549.64 = 51,287.81/x
  3. Step 3: Cross multiply
    89,531.15x = 123,549.64 × 51,287.81
  4. Step 4: Simplify right side
    89,531.15x = 6,336,589,715.92
  5. Step 5: Solve for x
    x = 6,336,589,715.92/89,531.15
  6. Step 6: Final answer
    x = 70,775.26

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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.