Home / 86,696.85-130,019.36-45,121.17

Finding the Fourth Proportional to 86,696.85, 130,019.36 and 45,121.17

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Solution

The fourth proportional to 86,696.85, 130,019.36 and 45,121.17 is: 67,668.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,696.85 : 130,019.36 = 45,121.17 : x
  2. Step 2: Convert to fraction form
    86,696.85/130,019.36 = 45,121.17/x
  3. Step 3: Cross multiply
    86,696.85x = 130,019.36 × 45,121.17
  4. Step 4: Simplify right side
    86,696.85x = 5,866,625,420.25
  5. Step 5: Solve for x
    x = 5,866,625,420.25/86,696.85
  6. Step 6: Final answer
    x = 67,668.26

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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.