Home / 89,660.97-123,690.60-57,840.12

Finding the Fourth Proportional to 89,660.97, 123,690.60 and 57,840.12

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Solution

The fourth proportional to 89,660.97, 123,690.60 and 57,840.12 is: 79,792.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,660.97 : 123,690.60 = 57,840.12 : x
  2. Step 2: Convert to fraction form
    89,660.97/123,690.60 = 57,840.12/x
  3. Step 3: Cross multiply
    89,660.97x = 123,690.60 × 57,840.12
  4. Step 4: Simplify right side
    89,660.97x = 7,154,279,146.87
  5. Step 5: Solve for x
    x = 7,154,279,146.87/89,660.97
  6. Step 6: Final answer
    x = 79,792.57

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1.5x scale

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.