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Finding the Fourth Proportional to 85,215.71, 127,594.96 and 47,668.86

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Solution

The fourth proportional to 85,215.71, 127,594.96 and 47,668.86 is: 71,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,215.71 : 127,594.96 = 47,668.86 : x
  2. Step 2: Convert to fraction form
    85,215.71/127,594.96 = 47,668.86/x
  3. Step 3: Cross multiply
    85,215.71x = 127,594.96 × 47,668.86
  4. Step 4: Simplify right side
    85,215.71x = 6,082,306,165.77
  5. Step 5: Solve for x
    x = 6,082,306,165.77/85,215.71
  6. Step 6: Final answer
    x = 71,375.41

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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.