Home / 80,837.28-121,256.64-28,284.48

Finding the Fourth Proportional to 80,837.28, 121,256.64 and 28,284.48

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Solution

The fourth proportional to 80,837.28, 121,256.64 and 28,284.48 is: 42,426.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,837.28 : 121,256.64 = 28,284.48 : x
  2. Step 2: Convert to fraction form
    80,837.28/121,256.64 = 28,284.48/x
  3. Step 3: Cross multiply
    80,837.28x = 121,256.64 × 28,284.48
  4. Step 4: Simplify right side
    80,837.28x = 3,429,681,008.95
  5. Step 5: Solve for x
    x = 3,429,681,008.95/80,837.28
  6. Step 6: Final answer
    x = 42,426.97

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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.