Home / 86,691.65-130,075.04-30,571.86

Finding the Fourth Proportional to 86,691.65, 130,075.04 and 30,571.86

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Solution

The fourth proportional to 86,691.65, 130,075.04 and 30,571.86 is: 45,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,691.65 : 130,075.04 = 30,571.86 : x
  2. Step 2: Convert to fraction form
    86,691.65/130,075.04 = 30,571.86/x
  3. Step 3: Cross multiply
    86,691.65x = 130,075.04 × 30,571.86
  4. Step 4: Simplify right side
    86,691.65x = 3,976,635,988.80
  5. Step 5: Solve for x
    x = 3,976,635,988.80/86,691.65
  6. Step 6: Final answer
    x = 45,871.04

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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.