Home / 89,386.20-123,251.87-57,078.34

Finding the Fourth Proportional to 89,386.20, 123,251.87 and 57,078.34

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Solution

The fourth proportional to 89,386.20, 123,251.87 and 57,078.34 is: 78,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,386.20 : 123,251.87 = 57,078.34 : x
  2. Step 2: Convert to fraction form
    89,386.20/123,251.87 = 57,078.34/x
  3. Step 3: Cross multiply
    89,386.20x = 123,251.87 × 57,078.34
  4. Step 4: Simplify right side
    89,386.20x = 7,035,011,382.54
  5. Step 5: Solve for x
    x = 7,035,011,382.54/89,386.20
  6. Step 6: Final answer
    x = 78,703.55

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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.