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Finding the Fourth Proportional to 91,304.75, 136,957.17 and 28,975.25

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Solution

The fourth proportional to 91,304.75, 136,957.17 and 28,975.25 is: 43,462.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,304.75 : 136,957.17 = 28,975.25 : x
  2. Step 2: Convert to fraction form
    91,304.75/136,957.17 = 28,975.25/x
  3. Step 3: Cross multiply
    91,304.75x = 136,957.17 × 28,975.25
  4. Step 4: Simplify right side
    91,304.75x = 3,968,368,240.04
  5. Step 5: Solve for x
    x = 3,968,368,240.04/91,304.75
  6. Step 6: Final answer
    x = 43,462.89

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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.