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Finding the Fourth Proportional to 83,744.59, 125,603.70 and 69,603.87

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Solution

The fourth proportional to 83,744.59, 125,603.70 and 69,603.87 is: 104,394.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,744.59 : 125,603.70 = 69,603.87 : x
  2. Step 2: Convert to fraction form
    83,744.59/125,603.70 = 69,603.87/x
  3. Step 3: Cross multiply
    83,744.59x = 125,603.70 × 69,603.87
  4. Step 4: Simplify right side
    83,744.59x = 8,742,503,606.32
  5. Step 5: Solve for x
    x = 8,742,503,606.32/83,744.59
  6. Step 6: Final answer
    x = 104,394.85

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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.