Home / 81,055.38-111,856.50-45,245.34

Finding the Fourth Proportional to 81,055.38, 111,856.50 and 45,245.34

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Solution

The fourth proportional to 81,055.38, 111,856.50 and 45,245.34 is: 62,438.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,055.38 : 111,856.50 = 45,245.34 : x
  2. Step 2: Convert to fraction form
    81,055.38/111,856.50 = 45,245.34/x
  3. Step 3: Cross multiply
    81,055.38x = 111,856.50 × 45,245.34
  4. Step 4: Simplify right side
    81,055.38x = 5,060,985,373.71
  5. Step 5: Solve for x
    x = 5,060,985,373.71/81,055.38
  6. Step 6: Final answer
    x = 62,438.61

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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.