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Finding the Fourth Proportional to 65,650.85, 90,471.76 and 47,717.45

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Solution

The fourth proportional to 65,650.85, 90,471.76 and 47,717.45 is: 65,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,650.85 : 90,471.76 = 47,717.45 : x
  2. Step 2: Convert to fraction form
    65,650.85/90,471.76 = 47,717.45/x
  3. Step 3: Cross multiply
    65,650.85x = 90,471.76 × 47,717.45
  4. Step 4: Simplify right side
    65,650.85x = 4,317,081,112.56
  5. Step 5: Solve for x
    x = 4,317,081,112.56/65,650.85
  6. Step 6: Final answer
    x = 65,758.20

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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.