Home / 81,291.20-112,179.87-45,484.61

Finding the Fourth Proportional to 81,291.20, 112,179.87 and 45,484.61

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Solution

The fourth proportional to 81,291.20, 112,179.87 and 45,484.61 is: 62,767.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,291.20 : 112,179.87 = 45,484.61 : x
  2. Step 2: Convert to fraction form
    81,291.20/112,179.87 = 45,484.61/x
  3. Step 3: Cross multiply
    81,291.20x = 112,179.87 × 45,484.61
  4. Step 4: Simplify right side
    81,291.20x = 5,102,457,075.90
  5. Step 5: Solve for x
    x = 5,102,457,075.90/81,291.20
  6. Step 6: Final answer
    x = 62,767.65

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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.