Home / 98,231.47-135,575.81-57,955.21

Finding the Fourth Proportional to 98,231.47, 135,575.81 and 57,955.21

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Solution

The fourth proportional to 98,231.47, 135,575.81 and 57,955.21 is: 79,987.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,231.47 : 135,575.81 = 57,955.21 : x
  2. Step 2: Convert to fraction form
    98,231.47/135,575.81 = 57,955.21/x
  3. Step 3: Cross multiply
    98,231.47x = 135,575.81 × 57,955.21
  4. Step 4: Simplify right side
    98,231.47x = 7,857,324,249.69
  5. Step 5: Solve for x
    x = 7,857,324,249.69/98,231.47
  6. Step 6: Final answer
    x = 79,987.85

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1.5x scale

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.