Home / 81,815.88-112,899.24-45,999.15

Finding the Fourth Proportional to 81,815.88, 112,899.24 and 45,999.15

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Solution

The fourth proportional to 81,815.88, 112,899.24 and 45,999.15 is: 63,475.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,815.88 : 112,899.24 = 45,999.15 : x
  2. Step 2: Convert to fraction form
    81,815.88/112,899.24 = 45,999.15/x
  3. Step 3: Cross multiply
    81,815.88x = 112,899.24 × 45,999.15
  4. Step 4: Simplify right side
    81,815.88x = 5,193,269,075.65
  5. Step 5: Solve for x
    x = 5,193,269,075.65/81,815.88
  6. Step 6: Final answer
    x = 63,475.07

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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.