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Finding the Fourth Proportional to 77,273.40, 115,845.30 and 40,337.40

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Solution

The fourth proportional to 77,273.40, 115,845.30 and 40,337.40 is: 60,472.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,273.40 : 115,845.30 = 40,337.40 : x
  2. Step 2: Convert to fraction form
    77,273.40/115,845.30 = 40,337.40/x
  3. Step 3: Cross multiply
    77,273.40x = 115,845.30 × 40,337.40
  4. Step 4: Simplify right side
    77,273.40x = 4,672,898,204.22
  5. Step 5: Solve for x
    x = 4,672,898,204.22/77,273.40
  6. Step 6: Final answer
    x = 60,472.27

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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.