Home / 80,693.64-121,043.70-28,108.44

Finding the Fourth Proportional to 80,693.64, 121,043.70 and 28,108.44

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Solution

The fourth proportional to 80,693.64, 121,043.70 and 28,108.44 is: 42,163.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,693.64 : 121,043.70 = 28,108.44 : x
  2. Step 2: Convert to fraction form
    80,693.64/121,043.70 = 28,108.44/x
  3. Step 3: Cross multiply
    80,693.64x = 121,043.70 × 28,108.44
  4. Step 4: Simplify right side
    80,693.64x = 3,402,349,578.83
  5. Step 5: Solve for x
    x = 3,402,349,578.83/80,693.64
  6. Step 6: Final answer
    x = 42,163.79

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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.