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Finding the Fourth Proportional to 85,479.92, 117,967.76 and 47,754.24

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Solution

The fourth proportional to 85,479.92, 117,967.76 and 47,754.24 is: 65,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,479.92 : 117,967.76 = 47,754.24 : x
  2. Step 2: Convert to fraction form
    85,479.92/117,967.76 = 47,754.24/x
  3. Step 3: Cross multiply
    85,479.92x = 117,967.76 × 47,754.24
  4. Step 4: Simplify right side
    85,479.92x = 5,633,460,723.30
  5. Step 5: Solve for x
    x = 5,633,460,723.30/85,479.92
  6. Step 6: Final answer
    x = 65,903.91

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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.