Home / 81,532.09-112,475.53-54,320.81

Finding the Fourth Proportional to 81,532.09, 112,475.53 and 54,320.81

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Solution

The fourth proportional to 81,532.09, 112,475.53 and 54,320.81 is: 74,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,532.09 : 112,475.53 = 54,320.81 : x
  2. Step 2: Convert to fraction form
    81,532.09/112,475.53 = 54,320.81/x
  3. Step 3: Cross multiply
    81,532.09x = 112,475.53 × 54,320.81
  4. Step 4: Simplify right side
    81,532.09x = 6,109,761,757.53
  5. Step 5: Solve for x
    x = 6,109,761,757.53/81,532.09
  6. Step 6: Final answer
    x = 74,936.90

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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.