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Finding the Fourth Proportional to 85,279.86, 117,683.30 and 47,040.92

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Solution

The fourth proportional to 85,279.86, 117,683.30 and 47,040.92 is: 64,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,279.86 : 117,683.30 = 47,040.92 : x
  2. Step 2: Convert to fraction form
    85,279.86/117,683.30 = 47,040.92/x
  3. Step 3: Cross multiply
    85,279.86x = 117,683.30 × 47,040.92
  4. Step 4: Simplify right side
    85,279.86x = 5,535,930,700.64
  5. Step 5: Solve for x
    x = 5,535,930,700.64/85,279.86
  6. Step 6: Final answer
    x = 64,914.87

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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.