Home / 80,968.43-121,448.79-28,373.91

Finding the Fourth Proportional to 80,968.43, 121,448.79 and 28,373.91

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Solution

The fourth proportional to 80,968.43, 121,448.79 and 28,373.91 is: 42,559.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,968.43 : 121,448.79 = 28,373.91 : x
  2. Step 2: Convert to fraction form
    80,968.43/121,448.79 = 28,373.91/x
  3. Step 3: Cross multiply
    80,968.43x = 121,448.79 × 28,373.91
  4. Step 4: Simplify right side
    80,968.43x = 3,445,977,037.07
  5. Step 5: Solve for x
    x = 3,445,977,037.07/80,968.43
  6. Step 6: Final answer
    x = 42,559.52

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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.