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Finding the Fourth Proportional to 86,691, 119,632.32 and 48,451.44

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Solution

The fourth proportional to 86,691, 119,632.32 and 48,451.44 is: 66,862.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,691 : 119,632.32 = 48,451.44 : x
  2. Step 2: Convert to fraction form
    86,691/119,632.32 = 48,451.44/x
  3. Step 3: Cross multiply
    86,691x = 119,632.32 × 48,451.44
  4. Step 4: Simplify right side
    86,691x = 5,796,358,174.54
  5. Step 5: Solve for x
    x = 5,796,358,174.54/86,691
  6. Step 6: Final answer
    x = 66,862.28

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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.