Home / 86,720.25-129,976.83-44,620.50

Finding the Fourth Proportional to 86,720.25, 129,976.83 and 44,620.50

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Solution

The fourth proportional to 86,720.25, 129,976.83 and 44,620.50 is: 66,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.25 : 129,976.83 = 44,620.50 : x
  2. Step 2: Convert to fraction form
    86,720.25/129,976.83 = 44,620.50/x
  3. Step 3: Cross multiply
    86,720.25x = 129,976.83 × 44,620.50
  4. Step 4: Simplify right side
    86,720.25x = 5,799,631,143.02
  5. Step 5: Solve for x
    x = 5,799,631,143.02/86,720.25
  6. Step 6: Final answer
    x = 66,877.47

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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.