Home / 81,039.78-111,841.23-45,235.17

Finding the Fourth Proportional to 81,039.78, 111,841.23 and 45,235.17

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Solution

The fourth proportional to 81,039.78, 111,841.23 and 45,235.17 is: 62,428.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,039.78 : 111,841.23 = 45,235.17 : x
  2. Step 2: Convert to fraction form
    81,039.78/111,841.23 = 45,235.17/x
  3. Step 3: Cross multiply
    81,039.78x = 111,841.23 × 45,235.17
  4. Step 4: Simplify right side
    81,039.78x = 5,059,157,052.06
  5. Step 5: Solve for x
    x = 5,059,157,052.06/81,039.78
  6. Step 6: Final answer
    x = 62,428.07

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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.