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Finding the Fourth Proportional to 67,938.74, 101,804.19 and 28,474.32

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Solution

The fourth proportional to 67,938.74, 101,804.19 and 28,474.32 is: 42,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,938.74 : 101,804.19 = 28,474.32 : x
  2. Step 2: Convert to fraction form
    67,938.74/101,804.19 = 28,474.32/x
  3. Step 3: Cross multiply
    67,938.74x = 101,804.19 × 28,474.32
  4. Step 4: Simplify right side
    67,938.74x = 2,898,805,083.40
  5. Step 5: Solve for x
    x = 2,898,805,083.40/67,938.74
  6. Step 6: Final answer
    x = 42,667.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.