Home / 86,527.20-129,531.60-51,448.80

Finding the Fourth Proportional to 86,527.20, 129,531.60 and 51,448.80

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Solution

The fourth proportional to 86,527.20, 129,531.60 and 51,448.80 is: 77,019.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,527.20 : 129,531.60 = 51,448.80 : x
  2. Step 2: Convert to fraction form
    86,527.20/129,531.60 = 51,448.80/x
  3. Step 3: Cross multiply
    86,527.20x = 129,531.60 × 51,448.80
  4. Step 4: Simplify right side
    86,527.20x = 6,664,245,382.08
  5. Step 5: Solve for x
    x = 6,664,245,382.08/86,527.20
  6. Step 6: Final answer
    x = 77,019.08

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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.