Home / 89,722.81-123,820.28-51,489.35

Finding the Fourth Proportional to 89,722.81, 123,820.28 and 51,489.35

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Solution

The fourth proportional to 89,722.81, 123,820.28 and 51,489.35 is: 71,056.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,722.81 : 123,820.28 = 51,489.35 : x
  2. Step 2: Convert to fraction form
    89,722.81/123,820.28 = 51,489.35/x
  3. Step 3: Cross multiply
    89,722.81x = 123,820.28 × 51,489.35
  4. Step 4: Simplify right side
    89,722.81x = 6,375,425,476.57
  5. Step 5: Solve for x
    x = 6,375,425,476.57/89,722.81
  6. Step 6: Final answer
    x = 71,056.91

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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.