Home / 86,582.40-129,841.20-30,400.80

Finding the Fourth Proportional to 86,582.40, 129,841.20 and 30,400.80

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Solution

The fourth proportional to 86,582.40, 129,841.20 and 30,400.80 is: 45,589.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,582.40 : 129,841.20 = 30,400.80 : x
  2. Step 2: Convert to fraction form
    86,582.40/129,841.20 = 30,400.80/x
  3. Step 3: Cross multiply
    86,582.40x = 129,841.20 × 30,400.80
  4. Step 4: Simplify right side
    86,582.40x = 3,947,276,352.96
  5. Step 5: Solve for x
    x = 3,947,276,352.96/86,582.40
  6. Step 6: Final answer
    x = 45,589.82

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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.