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Finding the Fourth Proportional to 85,371.56, 117,807.96 and 47,648.24

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Solution

The fourth proportional to 85,371.56, 117,807.96 and 47,648.24 is: 65,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,371.56 : 117,807.96 = 47,648.24 : x
  2. Step 2: Convert to fraction form
    85,371.56/117,807.96 = 47,648.24/x
  3. Step 3: Cross multiply
    85,371.56x = 117,807.96 × 47,648.24
  4. Step 4: Simplify right side
    85,371.56x = 5,613,341,951.99
  5. Step 5: Solve for x
    x = 5,613,341,951.99/85,371.56
  6. Step 6: Final answer
    x = 65,751.90

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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.