Home / 89,701.80-123,789.36-49,417

Finding the Fourth Proportional to 89,701.80, 123,789.36 and 49,417

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Solution

The fourth proportional to 89,701.80, 123,789.36 and 49,417 is: 68,195.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,701.80 : 123,789.36 = 49,417 : x
  2. Step 2: Convert to fraction form
    89,701.80/123,789.36 = 49,417/x
  3. Step 3: Cross multiply
    89,701.80x = 123,789.36 × 49,417
  4. Step 4: Simplify right side
    89,701.80x = 6,117,298,803.12
  5. Step 5: Solve for x
    x = 6,117,298,803.12/89,701.80
  6. Step 6: Final answer
    x = 68,195.94

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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.