Home / 87,211.88-130,768.61-30,259.07

Finding the Fourth Proportional to 87,211.88, 130,768.61 and 30,259.07

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Solution

The fourth proportional to 87,211.88, 130,768.61 and 30,259.07 is: 45,371.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,211.88 : 130,768.61 = 30,259.07 : x
  2. Step 2: Convert to fraction form
    87,211.88/130,768.61 = 30,259.07/x
  3. Step 3: Cross multiply
    87,211.88x = 130,768.61 × 30,259.07
  4. Step 4: Simplify right side
    87,211.88x = 3,956,935,718.65
  5. Step 5: Solve for x
    x = 3,956,935,718.65/87,211.88
  6. Step 6: Final answer
    x = 45,371.52

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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.