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Finding the Fourth Proportional to 89,862.70, 123,921.95 and 69,712.22

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Solution

The fourth proportional to 89,862.70, 123,921.95 and 69,712.22 is: 96,134.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,862.70 : 123,921.95 = 69,712.22 : x
  2. Step 2: Convert to fraction form
    89,862.70/123,921.95 = 69,712.22/x
  3. Step 3: Cross multiply
    89,862.70x = 123,921.95 × 69,712.22
  4. Step 4: Simplify right side
    89,862.70x = 8,638,873,273.06
  5. Step 5: Solve for x
    x = 8,638,873,273.06/89,862.70
  6. Step 6: Final answer
    x = 96,134.14

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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.