Home / 98,005.20-135,257.22-57,731.64

Finding the Fourth Proportional to 98,005.20, 135,257.22 and 57,731.64

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Solution

The fourth proportional to 98,005.20, 135,257.22 and 57,731.64 is: 79,675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,005.20 : 135,257.22 = 57,731.64 : x
  2. Step 2: Convert to fraction form
    98,005.20/135,257.22 = 57,731.64/x
  3. Step 3: Cross multiply
    98,005.20x = 135,257.22 × 57,731.64
  4. Step 4: Simplify right side
    98,005.20x = 7,808,621,132.44
  5. Step 5: Solve for x
    x = 7,808,621,132.44/98,005.20
  6. Step 6: Final answer
    x = 79,675.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.