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Finding the Fourth Proportional to 81,739.29, 112,796.62 and 47,750.93

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Solution

The fourth proportional to 81,739.29, 112,796.62 and 47,750.93 is: 65,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,739.29 : 112,796.62 = 47,750.93 : x
  2. Step 2: Convert to fraction form
    81,739.29/112,796.62 = 47,750.93/x
  3. Step 3: Cross multiply
    81,739.29x = 112,796.62 × 47,750.93
  4. Step 4: Simplify right side
    81,739.29x = 5,386,143,505.86
  5. Step 5: Solve for x
    x = 5,386,143,505.86/81,739.29
  6. Step 6: Final answer
    x = 65,894.18

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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.