Home / 98,487.28-135,860.34-74,572.48

Finding the Fourth Proportional to 98,487.28, 135,860.34 and 74,572.48

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Solution

The fourth proportional to 98,487.28, 135,860.34 and 74,572.48 is: 102,870.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,487.28 : 135,860.34 = 74,572.48 : x
  2. Step 2: Convert to fraction form
    98,487.28/135,860.34 = 74,572.48/x
  3. Step 3: Cross multiply
    98,487.28x = 135,860.34 × 74,572.48
  4. Step 4: Simplify right side
    98,487.28x = 10,131,442,487.44
  5. Step 5: Solve for x
    x = 10,131,442,487.44/98,487.28
  6. Step 6: Final answer
    x = 102,870.57

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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.