Home / 81,148.40-111,974.64-45,337.04

Finding the Fourth Proportional to 81,148.40, 111,974.64 and 45,337.04

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Solution

The fourth proportional to 81,148.40, 111,974.64 and 45,337.04 is: 62,559.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,148.40 : 111,974.64 = 45,337.04 : x
  2. Step 2: Convert to fraction form
    81,148.40/111,974.64 = 45,337.04/x
  3. Step 3: Cross multiply
    81,148.40x = 111,974.64 × 45,337.04
  4. Step 4: Simplify right side
    81,148.40x = 5,076,598,732.67
  5. Step 5: Solve for x
    x = 5,076,598,732.67/81,148.40
  6. Step 6: Final answer
    x = 62,559.44

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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.