Home / 86,812.20-130,218.30-47,446.20

Finding the Fourth Proportional to 86,812.20, 130,218.30 and 47,446.20

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Solution

The fourth proportional to 86,812.20, 130,218.30 and 47,446.20 is: 71,169.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,812.20 : 130,218.30 = 47,446.20 : x
  2. Step 2: Convert to fraction form
    86,812.20/130,218.30 = 47,446.20/x
  3. Step 3: Cross multiply
    86,812.20x = 130,218.30 × 47,446.20
  4. Step 4: Simplify right side
    86,812.20x = 6,178,363,505.46
  5. Step 5: Solve for x
    x = 6,178,363,505.46/86,812.20
  6. Step 6: Final answer
    x = 71,169.30

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1.5x scale

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.