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Finding the Fourth Proportional to 85,179.78, 117,550.53 and 47,456.46

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Solution

The fourth proportional to 85,179.78, 117,550.53 and 47,456.46 is: 65,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,179.78 : 117,550.53 = 47,456.46 : x
  2. Step 2: Convert to fraction form
    85,179.78/117,550.53 = 47,456.46/x
  3. Step 3: Cross multiply
    85,179.78x = 117,550.53 × 47,456.46
  4. Step 4: Simplify right side
    85,179.78x = 5,578,532,024.92
  5. Step 5: Solve for x
    x = 5,578,532,024.92/85,179.78
  6. Step 6: Final answer
    x = 65,491.27

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1.5x scale

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.