Home / 80,995.69-121,534.53-54,645.06

Finding the Fourth Proportional to 80,995.69, 121,534.53 and 54,645.06

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Solution

The fourth proportional to 80,995.69, 121,534.53 and 54,645.06 is: 81,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,995.69 : 121,534.53 = 54,645.06 : x
  2. Step 2: Convert to fraction form
    80,995.69/121,534.53 = 54,645.06/x
  3. Step 3: Cross multiply
    80,995.69x = 121,534.53 × 54,645.06
  4. Step 4: Simplify right side
    80,995.69x = 6,641,261,410.70
  5. Step 5: Solve for x
    x = 6,641,261,410.70/80,995.69
  6. Step 6: Final answer
    x = 81,995.25

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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.