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Finding the Fourth Proportional to 81,667.38, 112,712.64 and 45,859.83

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Solution

The fourth proportional to 81,667.38, 112,712.64 and 45,859.83 is: 63,293.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,667.38 : 112,712.64 = 45,859.83 : x
  2. Step 2: Convert to fraction form
    81,667.38/112,712.64 = 45,859.83/x
  3. Step 3: Cross multiply
    81,667.38x = 112,712.64 × 45,859.83
  4. Step 4: Simplify right side
    81,667.38x = 5,168,982,509.25
  5. Step 5: Solve for x
    x = 5,168,982,509.25/81,667.38
  6. Step 6: Final answer
    x = 63,293.11

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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.