Home / 86,243.32-129,407.64-38,891.26

Finding the Fourth Proportional to 86,243.32, 129,407.64 and 38,891.26

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Solution

The fourth proportional to 86,243.32, 129,407.64 and 38,891.26 is: 58,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,243.32 : 129,407.64 = 38,891.26 : x
  2. Step 2: Convert to fraction form
    86,243.32/129,407.64 = 38,891.26/x
  3. Step 3: Cross multiply
    86,243.32x = 129,407.64 × 38,891.26
  4. Step 4: Simplify right side
    86,243.32x = 5,032,826,173.23
  5. Step 5: Solve for x
    x = 5,032,826,173.23/86,243.32
  6. Step 6: Final answer
    x = 58,356.13

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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.