Home / 86,739.20-130,060.20-36,810.80

Finding the Fourth Proportional to 86,739.20, 130,060.20 and 36,810.80

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Solution

The fourth proportional to 86,739.20, 130,060.20 and 36,810.80 is: 55,195.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,739.20 : 130,060.20 = 36,810.80 : x
  2. Step 2: Convert to fraction form
    86,739.20/130,060.20 = 36,810.80/x
  3. Step 3: Cross multiply
    86,739.20x = 130,060.20 × 36,810.80
  4. Step 4: Simplify right side
    86,739.20x = 4,787,620,010.16
  5. Step 5: Solve for x
    x = 4,787,620,010.16/86,739.20
  6. Step 6: Final answer
    x = 55,195.57

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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.