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Finding the Fourth Proportional to 85,105.10, 127,614.90 and 49,578.14

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Solution

The fourth proportional to 85,105.10, 127,614.90 and 49,578.14 is: 74,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,105.10 : 127,614.90 = 49,578.14 : x
  2. Step 2: Convert to fraction form
    85,105.10/127,614.90 = 49,578.14/x
  3. Step 3: Cross multiply
    85,105.10x = 127,614.90 × 49,578.14
  4. Step 4: Simplify right side
    85,105.10x = 6,326,909,378.29
  5. Step 5: Solve for x
    x = 6,326,909,378.29/85,105.10
  6. Step 6: Final answer
    x = 74,342.31

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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.