Home / 80,847.47-121,326.69-28,257.01

Finding the Fourth Proportional to 80,847.47, 121,326.69 and 28,257.01

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Solution

The fourth proportional to 80,847.47, 121,326.69 and 28,257.01 is: 42,404.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,847.47 : 121,326.69 = 28,257.01 : x
  2. Step 2: Convert to fraction form
    80,847.47/121,326.69 = 28,257.01/x
  3. Step 3: Cross multiply
    80,847.47x = 121,326.69 × 28,257.01
  4. Step 4: Simplify right side
    80,847.47x = 3,428,329,492.60
  5. Step 5: Solve for x
    x = 3,428,329,492.60/80,847.47
  6. Step 6: Final answer
    x = 42,404.91

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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.