Home / 55,740.80-83,481.60-38,115.20

Finding the Fourth Proportional to 55,740.80, 83,481.60 and 38,115.20

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Solution

The fourth proportional to 55,740.80, 83,481.60 and 38,115.20 is: 57,084.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,740.80 : 83,481.60 = 38,115.20 : x
  2. Step 2: Convert to fraction form
    55,740.80/83,481.60 = 38,115.20/x
  3. Step 3: Cross multiply
    55,740.80x = 83,481.60 × 38,115.20
  4. Step 4: Simplify right side
    55,740.80x = 3,181,917,880.32
  5. Step 5: Solve for x
    x = 3,181,917,880.32/55,740.80
  6. Step 6: Final answer
    x = 57,084.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.