Home / 91,304.86-136,963.47-28,121.08

Finding the Fourth Proportional to 91,304.86, 136,963.47 and 28,121.08

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Solution

The fourth proportional to 91,304.86, 136,963.47 and 28,121.08 is: 42,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,304.86 : 136,963.47 = 28,121.08 : x
  2. Step 2: Convert to fraction form
    91,304.86/136,963.47 = 28,121.08/x
  3. Step 3: Cross multiply
    91,304.86x = 136,963.47 × 28,121.08
  4. Step 4: Simplify right side
    91,304.86x = 3,851,560,696.95
  5. Step 5: Solve for x
    x = 3,851,560,696.95/91,304.86
  6. Step 6: Final answer
    x = 42,183.52

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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.