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Finding the Fourth Proportional to 98,368.87, 135,732.11 and 55,342.38

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Solution

The fourth proportional to 98,368.87, 135,732.11 and 55,342.38 is: 76,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,368.87 : 135,732.11 = 55,342.38 : x
  2. Step 2: Convert to fraction form
    98,368.87/135,732.11 = 55,342.38/x
  3. Step 3: Cross multiply
    98,368.87x = 135,732.11 × 55,342.38
  4. Step 4: Simplify right side
    98,368.87x = 7,511,737,733.11
  5. Step 5: Solve for x
    x = 7,511,737,733.11/98,368.87
  6. Step 6: Final answer
    x = 76,362.96

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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.