Home / 81,144.18-111,979.89-45,335.70

Finding the Fourth Proportional to 81,144.18, 111,979.89 and 45,335.70

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Solution

The fourth proportional to 81,144.18, 111,979.89 and 45,335.70 is: 62,563.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,144.18 : 111,979.89 = 45,335.70 : x
  2. Step 2: Convert to fraction form
    81,144.18/111,979.89 = 45,335.70/x
  3. Step 3: Cross multiply
    81,144.18x = 111,979.89 × 45,335.70
  4. Step 4: Simplify right side
    81,144.18x = 5,076,686,699.07
  5. Step 5: Solve for x
    x = 5,076,686,699.07/81,144.18
  6. Step 6: Final answer
    x = 62,563.78

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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.