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Finding the Fourth Proportional to 98,169.63, 135,471.06 and 57,885.90

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Solution

The fourth proportional to 98,169.63, 135,471.06 and 57,885.90 is: 79,880.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,169.63 : 135,471.06 = 57,885.90 : x
  2. Step 2: Convert to fraction form
    98,169.63/135,471.06 = 57,885.90/x
  3. Step 3: Cross multiply
    98,169.63x = 135,471.06 × 57,885.90
  4. Step 4: Simplify right side
    98,169.63x = 7,841,864,232.05
  5. Step 5: Solve for x
    x = 7,841,864,232.05/98,169.63
  6. Step 6: Final answer
    x = 79,880.76

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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.