Home / 89,369.40-123,322.05-51,121.20

Finding the Fourth Proportional to 89,369.40, 123,322.05 and 51,121.20

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Solution

The fourth proportional to 89,369.40, 123,322.05 and 51,121.20 is: 70,542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,369.40 : 123,322.05 = 51,121.20 : x
  2. Step 2: Convert to fraction form
    89,369.40/123,322.05 = 51,121.20/x
  3. Step 3: Cross multiply
    89,369.40x = 123,322.05 × 51,121.20
  4. Step 4: Simplify right side
    89,369.40x = 6,304,371,182.46
  5. Step 5: Solve for x
    x = 6,304,371,182.46/89,369.40
  6. Step 6: Final answer
    x = 70,542.84

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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.