Home / 81,789.62-113,070.96-81,041.18

Finding the Fourth Proportional to 81,789.62, 113,070.96 and 81,041.18

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Solution

The fourth proportional to 81,789.62, 113,070.96 and 81,041.18 is: 112,036.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789.62 : 113,070.96 = 81,041.18 : x
  2. Step 2: Convert to fraction form
    81,789.62/113,070.96 = 81,041.18/x
  3. Step 3: Cross multiply
    81,789.62x = 113,070.96 × 81,041.18
  4. Step 4: Simplify right side
    81,789.62x = 9,163,404,022.13
  5. Step 5: Solve for x
    x = 9,163,404,022.13/81,789.62
  6. Step 6: Final answer
    x = 112,036.27

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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.