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Finding the Fourth Proportional to 89,808.30, 123,943.77 and 51,572.84

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Solution

The fourth proportional to 89,808.30, 123,943.77 and 51,572.84 is: 71,175.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,808.30 : 123,943.77 = 51,572.84 : x
  2. Step 2: Convert to fraction form
    89,808.30/123,943.77 = 51,572.84/x
  3. Step 3: Cross multiply
    89,808.30x = 123,943.77 × 51,572.84
  4. Step 4: Simplify right side
    89,808.30x = 6,392,131,599.49
  5. Step 5: Solve for x
    x = 6,392,131,599.49/89,808.30
  6. Step 6: Final answer
    x = 71,175.29

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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.