Home / 86,749.20-130,123.80-24,419.70

Finding the Fourth Proportional to 86,749.20, 130,123.80 and 24,419.70

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Solution

The fourth proportional to 86,749.20, 130,123.80 and 24,419.70 is: 36,629.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,749.20 : 130,123.80 = 24,419.70 : x
  2. Step 2: Convert to fraction form
    86,749.20/130,123.80 = 24,419.70/x
  3. Step 3: Cross multiply
    86,749.20x = 130,123.80 × 24,419.70
  4. Step 4: Simplify right side
    86,749.20x = 3,177,584,158.86
  5. Step 5: Solve for x
    x = 3,177,584,158.86/86,749.20
  6. Step 6: Final answer
    x = 36,629.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.