Home / 81,412.26-112,387.38-54,572.31

Finding the Fourth Proportional to 81,412.26, 112,387.38 and 54,572.31

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Solution

The fourth proportional to 81,412.26, 112,387.38 and 54,572.31 is: 75,335.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,412.26 : 112,387.38 = 54,572.31 : x
  2. Step 2: Convert to fraction form
    81,412.26/112,387.38 = 54,572.31/x
  3. Step 3: Cross multiply
    81,412.26x = 112,387.38 × 54,572.31
  4. Step 4: Simplify right side
    81,412.26x = 6,133,238,941.45
  5. Step 5: Solve for x
    x = 6,133,238,941.45/81,412.26
  6. Step 6: Final answer
    x = 75,335.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.