Home / 54,690.12-75,471.92-30,490.80

Finding the Fourth Proportional to 54,690.12, 75,471.92 and 30,490.80

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Solution

The fourth proportional to 54,690.12, 75,471.92 and 30,490.80 is: 42,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,690.12 : 75,471.92 = 30,490.80 : x
  2. Step 2: Convert to fraction form
    54,690.12/75,471.92 = 30,490.80/x
  3. Step 3: Cross multiply
    54,690.12x = 75,471.92 × 30,490.80
  4. Step 4: Simplify right side
    54,690.12x = 2,301,198,897.20
  5. Step 5: Solve for x
    x = 2,301,198,897.20/54,690.12
  6. Step 6: Final answer
    x = 42,077.05

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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.