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Finding the Fourth Proportional to 88,869, 122,639.22 and 49,125

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Solution

The fourth proportional to 88,869, 122,639.22 and 49,125 is: 67,792.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,869 : 122,639.22 = 49,125 : x
  2. Step 2: Convert to fraction form
    88,869/122,639.22 = 49,125/x
  3. Step 3: Cross multiply
    88,869x = 122,639.22 × 49,125
  4. Step 4: Simplify right side
    88,869x = 6,024,651,682.50
  5. Step 5: Solve for x
    x = 6,024,651,682.50/88,869
  6. Step 6: Final answer
    x = 67,792.50

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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.