Home / 80,840.97-121,316.94-28,250.51

Finding the Fourth Proportional to 80,840.97, 121,316.94 and 28,250.51

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Solution

The fourth proportional to 80,840.97, 121,316.94 and 28,250.51 is: 42,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,840.97 : 121,316.94 = 28,250.51 : x
  2. Step 2: Convert to fraction form
    80,840.97/121,316.94 = 28,250.51/x
  3. Step 3: Cross multiply
    80,840.97x = 121,316.94 × 28,250.51
  4. Step 4: Simplify right side
    80,840.97x = 3,427,264,820.05
  5. Step 5: Solve for x
    x = 3,427,264,820.05/80,840.97
  6. Step 6: Final answer
    x = 42,395.15

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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.