Home / 54,331.50-74,977.74-31,686.20

Finding the Fourth Proportional to 54,331.50, 74,977.74 and 31,686.20

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Solution

The fourth proportional to 54,331.50, 74,977.74 and 31,686.20 is: 43,727.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,331.50 : 74,977.74 = 31,686.20 : x
  2. Step 2: Convert to fraction form
    54,331.50/74,977.74 = 31,686.20/x
  3. Step 3: Cross multiply
    54,331.50x = 74,977.74 × 31,686.20
  4. Step 4: Simplify right side
    54,331.50x = 2,375,759,290.30
  5. Step 5: Solve for x
    x = 2,375,759,290.30/54,331.50
  6. Step 6: Final answer
    x = 43,727.11

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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.