Home / 81,431.68-112,373.76-45,623.20

Finding the Fourth Proportional to 81,431.68, 112,373.76 and 45,623.20

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Solution

The fourth proportional to 81,431.68, 112,373.76 and 45,623.20 is: 62,958.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.68 : 112,373.76 = 45,623.20 : x
  2. Step 2: Convert to fraction form
    81,431.68/112,373.76 = 45,623.20/x
  3. Step 3: Cross multiply
    81,431.68x = 112,373.76 × 45,623.20
  4. Step 4: Simplify right side
    81,431.68x = 5,126,850,527.23
  5. Step 5: Solve for x
    x = 5,126,850,527.23/81,431.68
  6. Step 6: Final answer
    x = 62,958.92

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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.