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Finding the Fourth Proportional to 60,718, 91,077.06 and 19,165

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Solution

The fourth proportional to 60,718, 91,077.06 and 19,165 is: 28,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,718 : 91,077.06 = 19,165 : x
  2. Step 2: Convert to fraction form
    60,718/91,077.06 = 19,165/x
  3. Step 3: Cross multiply
    60,718x = 91,077.06 × 19,165
  4. Step 4: Simplify right side
    60,718x = 1,745,491,854.90
  5. Step 5: Solve for x
    x = 1,745,491,854.90/60,718
  6. Step 6: Final answer
    x = 28,747.52

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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.