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Finding the Fourth Proportional to 291,747.67, 437,624.39 and 81,401.11

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Solution

The fourth proportional to 291,747.67, 437,624.39 and 81,401.11 is: 122,102.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,747.67 : 437,624.39 = 81,401.11 : x
  2. Step 2: Convert to fraction form
    291,747.67/437,624.39 = 81,401.11/x
  3. Step 3: Cross multiply
    291,747.67x = 437,624.39 × 81,401.11
  4. Step 4: Simplify right side
    291,747.67x = 35,623,110,702.07
  5. Step 5: Solve for x
    x = 35,623,110,702.07/291,747.67
  6. Step 6: Final answer
    x = 122,102.47

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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.