Home / 81,031.56-111,823.32-45,221.16

Finding the Fourth Proportional to 81,031.56, 111,823.32 and 45,221.16

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Solution

The fourth proportional to 81,031.56, 111,823.32 and 45,221.16 is: 62,405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,031.56 : 111,823.32 = 45,221.16 : x
  2. Step 2: Convert to fraction form
    81,031.56/111,823.32 = 45,221.16/x
  3. Step 3: Cross multiply
    81,031.56x = 111,823.32 × 45,221.16
  4. Step 4: Simplify right side
    81,031.56x = 5,056,780,245.45
  5. Step 5: Solve for x
    x = 5,056,780,245.45/81,031.56
  6. Step 6: Final answer
    x = 62,405.07

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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.