Home / 89,765.64-123,875.97-49,479.45

Finding the Fourth Proportional to 89,765.64, 123,875.97 and 49,479.45

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Solution

The fourth proportional to 89,765.64, 123,875.97 and 49,479.45 is: 68,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,765.64 : 123,875.97 = 49,479.45 : x
  2. Step 2: Convert to fraction form
    89,765.64/123,875.97 = 49,479.45/x
  3. Step 3: Cross multiply
    89,765.64x = 123,875.97 × 49,479.45
  4. Step 4: Simplify right side
    89,765.64x = 6,129,314,863.82
  5. Step 5: Solve for x
    x = 6,129,314,863.82/89,765.64
  6. Step 6: Final answer
    x = 68,281.30

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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.