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Finding the Fourth Proportional to 89,859.30, 123,966.27 and 54,028.50

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Solution

The fourth proportional to 89,859.30, 123,966.27 and 54,028.50 is: 74,535.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,859.30 : 123,966.27 = 54,028.50 : x
  2. Step 2: Convert to fraction form
    89,859.30/123,966.27 = 54,028.50/x
  3. Step 3: Cross multiply
    89,859.30x = 123,966.27 × 54,028.50
  4. Step 4: Simplify right side
    89,859.30x = 6,697,711,618.70
  5. Step 5: Solve for x
    x = 6,697,711,618.70/89,859.30
  6. Step 6: Final answer
    x = 74,535.54

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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.