Home / 86,739.84-130,077.12-34,120.56

Finding the Fourth Proportional to 86,739.84, 130,077.12 and 34,120.56

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Solution

The fourth proportional to 86,739.84, 130,077.12 and 34,120.56 is: 51,168.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,739.84 : 130,077.12 = 34,120.56 : x
  2. Step 2: Convert to fraction form
    86,739.84/130,077.12 = 34,120.56/x
  3. Step 3: Cross multiply
    86,739.84x = 130,077.12 × 34,120.56
  4. Step 4: Simplify right side
    86,739.84x = 4,438,304,177.59
  5. Step 5: Solve for x
    x = 4,438,304,177.59/86,739.84
  6. Step 6: Final answer
    x = 51,168.00

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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.