Home / 89,738.40-123,793.20-61,471.20

Finding the Fourth Proportional to 89,738.40, 123,793.20 and 61,471.20

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Solution

The fourth proportional to 89,738.40, 123,793.20 and 61,471.20 is: 84,798.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,738.40 : 123,793.20 = 61,471.20 : x
  2. Step 2: Convert to fraction form
    89,738.40/123,793.20 = 61,471.20/x
  3. Step 3: Cross multiply
    89,738.40x = 123,793.20 × 61,471.20
  4. Step 4: Simplify right side
    89,738.40x = 7,609,716,555.84
  5. Step 5: Solve for x
    x = 7,609,716,555.84/89,738.40
  6. Step 6: Final answer
    x = 84,798.89

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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.