Home / 89,478.20-123,480.16-51,238.32

Finding the Fourth Proportional to 89,478.20, 123,480.16 and 51,238.32

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Solution

The fourth proportional to 89,478.20, 123,480.16 and 51,238.32 is: 70,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,478.20 : 123,480.16 = 51,238.32 : x
  2. Step 2: Convert to fraction form
    89,478.20/123,480.16 = 51,238.32/x
  3. Step 3: Cross multiply
    89,478.20x = 123,480.16 × 51,238.32
  4. Step 4: Simplify right side
    89,478.20x = 6,326,915,951.73
  5. Step 5: Solve for x
    x = 6,326,915,951.73/89,478.20
  6. Step 6: Final answer
    x = 70,709.02

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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.