Home / 81,158.34-111,864.69-54,291.18

Finding the Fourth Proportional to 81,158.34, 111,864.69 and 54,291.18

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Solution

The fourth proportional to 81,158.34, 111,864.69 and 54,291.18 is: 74,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,158.34 : 111,864.69 = 54,291.18 : x
  2. Step 2: Convert to fraction form
    81,158.34/111,864.69 = 54,291.18/x
  3. Step 3: Cross multiply
    81,158.34x = 111,864.69 × 54,291.18
  4. Step 4: Simplify right side
    81,158.34x = 6,073,266,020.43
  5. Step 5: Solve for x
    x = 6,073,266,020.43/81,158.34
  6. Step 6: Final answer
    x = 74,832.31

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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.