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Finding the Fourth Proportional to 62,949.60, 86,832 and 49,499.28

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Solution

The fourth proportional to 62,949.60, 86,832 and 49,499.28 is: 68,278.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,949.60 : 86,832 = 49,499.28 : x
  2. Step 2: Convert to fraction form
    62,949.60/86,832 = 49,499.28/x
  3. Step 3: Cross multiply
    62,949.60x = 86,832 × 49,499.28
  4. Step 4: Simplify right side
    62,949.60x = 4,298,121,480.96
  5. Step 5: Solve for x
    x = 4,298,121,480.96/62,949.60
  6. Step 6: Final answer
    x = 68,278.77

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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.