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Finding the Fourth Proportional to 91,857.63, 126,753.75 and 51,575.79

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Solution

The fourth proportional to 91,857.63, 126,753.75 and 51,575.79 is: 71,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,857.63 : 126,753.75 = 51,575.79 : x
  2. Step 2: Convert to fraction form
    91,857.63/126,753.75 = 51,575.79/x
  3. Step 3: Cross multiply
    91,857.63x = 126,753.75 × 51,575.79
  4. Step 4: Simplify right side
    91,857.63x = 6,537,424,791.71
  5. Step 5: Solve for x
    x = 6,537,424,791.71/91,857.63
  6. Step 6: Final answer
    x = 71,169.10

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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.