Home / 89,499.74-123,512.65-49,215.20

Finding the Fourth Proportional to 89,499.74, 123,512.65 and 49,215.20

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Solution

The fourth proportional to 89,499.74, 123,512.65 and 49,215.20 is: 67,918.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,499.74 : 123,512.65 = 49,215.20 : x
  2. Step 2: Convert to fraction form
    89,499.74/123,512.65 = 49,215.20/x
  3. Step 3: Cross multiply
    89,499.74x = 123,512.65 × 49,215.20
  4. Step 4: Simplify right side
    89,499.74x = 6,078,699,031.68
  5. Step 5: Solve for x
    x = 6,078,699,031.68/89,499.74
  6. Step 6: Final answer
    x = 67,918.63

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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.