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Finding the Fourth Proportional to 60,789.89, 91,187.45 and 18,671.65

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Solution

The fourth proportional to 60,789.89, 91,187.45 and 18,671.65 is: 28,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,789.89 : 91,187.45 = 18,671.65 : x
  2. Step 2: Convert to fraction form
    60,789.89/91,187.45 = 18,671.65/x
  3. Step 3: Cross multiply
    60,789.89x = 91,187.45 × 18,671.65
  4. Step 4: Simplify right side
    60,789.89x = 1,702,620,171.42
  5. Step 5: Solve for x
    x = 1,702,620,171.42/60,789.89
  6. Step 6: Final answer
    x = 28,008.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.