Home / 81,279.27-112,174.70-45,478.35

Finding the Fourth Proportional to 81,279.27, 112,174.70 and 45,478.35

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Solution

The fourth proportional to 81,279.27, 112,174.70 and 45,478.35 is: 62,765.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.27 : 112,174.70 = 45,478.35 : x
  2. Step 2: Convert to fraction form
    81,279.27/112,174.70 = 45,478.35/x
  3. Step 3: Cross multiply
    81,279.27x = 112,174.70 × 45,478.35
  4. Step 4: Simplify right side
    81,279.27x = 5,101,520,040.35
  5. Step 5: Solve for x
    x = 5,101,520,040.35/81,279.27
  6. Step 6: Final answer
    x = 62,765.33

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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.