Home / 89,143.50-123,023.49-51,417.75

Finding the Fourth Proportional to 89,143.50, 123,023.49 and 51,417.75

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Solution

The fourth proportional to 89,143.50, 123,023.49 and 51,417.75 is: 70,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,143.50 : 123,023.49 = 51,417.75 : x
  2. Step 2: Convert to fraction form
    89,143.50/123,023.49 = 51,417.75/x
  3. Step 3: Cross multiply
    89,143.50x = 123,023.49 × 51,417.75
  4. Step 4: Simplify right side
    89,143.50x = 6,325,591,052.95
  5. Step 5: Solve for x
    x = 6,325,591,052.95/89,143.50
  6. Step 6: Final answer
    x = 70,959.64

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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.