Home / 81,291.82-112,187.07-45,479.69

Finding the Fourth Proportional to 81,291.82, 112,187.07 and 45,479.69

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Solution

The fourth proportional to 81,291.82, 112,187.07 and 45,479.69 is: 62,764.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,291.82 : 112,187.07 = 45,479.69 : x
  2. Step 2: Convert to fraction form
    81,291.82/112,187.07 = 45,479.69/x
  3. Step 3: Cross multiply
    81,291.82x = 112,187.07 × 45,479.69
  4. Step 4: Simplify right side
    81,291.82x = 5,102,233,165.61
  5. Step 5: Solve for x
    x = 5,102,233,165.61/81,291.82
  6. Step 6: Final answer
    x = 62,764.41

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Half scale
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Double scale
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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.