Home / 55,111.20-82,839.60-54,074.40

Finding the Fourth Proportional to 55,111.20, 82,839.60 and 54,074.40

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Solution

The fourth proportional to 55,111.20, 82,839.60 and 54,074.40 is: 81,281.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,111.20 : 82,839.60 = 54,074.40 : x
  2. Step 2: Convert to fraction form
    55,111.20/82,839.60 = 54,074.40/x
  3. Step 3: Cross multiply
    55,111.20x = 82,839.60 × 54,074.40
  4. Step 4: Simplify right side
    55,111.20x = 4,479,501,666.24
  5. Step 5: Solve for x
    x = 4,479,501,666.24/55,111.20
  6. Step 6: Final answer
    x = 81,281.15

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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.