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Finding the Fourth Proportional to 91,103.54, 125,733.90 and 53,377.82

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Solution

The fourth proportional to 91,103.54, 125,733.90 and 53,377.82 is: 73,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,103.54 : 125,733.90 = 53,377.82 : x
  2. Step 2: Convert to fraction form
    91,103.54/125,733.90 = 53,377.82/x
  3. Step 3: Cross multiply
    91,103.54x = 125,733.90 × 53,377.82
  4. Step 4: Simplify right side
    91,103.54x = 6,711,401,482.10
  5. Step 5: Solve for x
    x = 6,711,401,482.10/91,103.54
  6. Step 6: Final answer
    x = 73,667.85

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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.