Home / 81,042.80-111,716.52-63,106.16

Finding the Fourth Proportional to 81,042.80, 111,716.52 and 63,106.16

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Solution

The fourth proportional to 81,042.80, 111,716.52 and 63,106.16 is: 86,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.80 : 111,716.52 = 63,106.16 : x
  2. Step 2: Convert to fraction form
    81,042.80/111,716.52 = 63,106.16/x
  3. Step 3: Cross multiply
    81,042.80x = 111,716.52 × 63,106.16
  4. Step 4: Simplify right side
    81,042.80x = 7,050,000,585.76
  5. Step 5: Solve for x
    x = 7,050,000,585.76/81,042.80
  6. Step 6: Final answer
    x = 86,991.08

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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.