Home / 89,708.64-123,792-53,877.36

Finding the Fourth Proportional to 89,708.64, 123,792 and 53,877.36

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Solution

The fourth proportional to 89,708.64, 123,792 and 53,877.36 is: 74,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,708.64 : 123,792 = 53,877.36 : x
  2. Step 2: Convert to fraction form
    89,708.64/123,792 = 53,877.36/x
  3. Step 3: Cross multiply
    89,708.64x = 123,792 × 53,877.36
  4. Step 4: Simplify right side
    89,708.64x = 6,669,586,149.12
  5. Step 5: Solve for x
    x = 6,669,586,149.12/89,708.64
  6. Step 6: Final answer
    x = 74,347.20

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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.