Home / 80,681.88-121,039.24-28,095.48

Finding the Fourth Proportional to 80,681.88, 121,039.24 and 28,095.48

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Solution

The fourth proportional to 80,681.88, 121,039.24 and 28,095.48 is: 42,148.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,681.88 : 121,039.24 = 28,095.48 : x
  2. Step 2: Convert to fraction form
    80,681.88/121,039.24 = 28,095.48/x
  3. Step 3: Cross multiply
    80,681.88x = 121,039.24 × 28,095.48
  4. Step 4: Simplify right side
    80,681.88x = 3,400,655,546.64
  5. Step 5: Solve for x
    x = 3,400,655,546.64/80,681.88
  6. Step 6: Final answer
    x = 42,148.94

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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.