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Finding the Fourth Proportional to 91,958.88, 126,916.96 and 56,169.48

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Solution

The fourth proportional to 91,958.88, 126,916.96 and 56,169.48 is: 77,522.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,958.88 : 126,916.96 = 56,169.48 : x
  2. Step 2: Convert to fraction form
    91,958.88/126,916.96 = 56,169.48/x
  3. Step 3: Cross multiply
    91,958.88x = 126,916.96 × 56,169.48
  4. Step 4: Simplify right side
    91,958.88x = 7,128,859,646.38
  5. Step 5: Solve for x
    x = 7,128,859,646.38/91,958.88
  6. Step 6: Final answer
    x = 77,522.25

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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.