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Finding the Fourth Proportional to 90,411.84, 124,766.88 and 49,575.84

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Solution

The fourth proportional to 90,411.84, 124,766.88 and 49,575.84 is: 68,413.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,411.84 : 124,766.88 = 49,575.84 : x
  2. Step 2: Convert to fraction form
    90,411.84/124,766.88 = 49,575.84/x
  3. Step 3: Cross multiply
    90,411.84x = 124,766.88 × 49,575.84
  4. Step 4: Simplify right side
    90,411.84x = 6,185,422,880.18
  5. Step 5: Solve for x
    x = 6,185,422,880.18/90,411.84
  6. Step 6: Final answer
    x = 68,413.86

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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.