Home / 80,650.89-111,304.46-48,386.72

Finding the Fourth Proportional to 80,650.89, 111,304.46 and 48,386.72

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Solution

The fourth proportional to 80,650.89, 111,304.46 and 48,386.72 is: 66,777.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,650.89 : 111,304.46 = 48,386.72 : x
  2. Step 2: Convert to fraction form
    80,650.89/111,304.46 = 48,386.72/x
  3. Step 3: Cross multiply
    80,650.89x = 111,304.46 × 48,386.72
  4. Step 4: Simplify right side
    80,650.89x = 5,385,658,140.00
  5. Step 5: Solve for x
    x = 5,385,658,140.00/80,650.89
  6. Step 6: Final answer
    x = 66,777.42

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1.5x scale

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.