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Finding the Fourth Proportional to 90,706.79, 125,176.87 and 49,872.64

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Solution

The fourth proportional to 90,706.79, 125,176.87 and 49,872.64 is: 68,825.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,706.79 : 125,176.87 = 49,872.64 : x
  2. Step 2: Convert to fraction form
    90,706.79/125,176.87 = 49,872.64/x
  3. Step 3: Cross multiply
    90,706.79x = 125,176.87 × 49,872.64
  4. Step 4: Simplify right side
    90,706.79x = 6,242,900,724.47
  5. Step 5: Solve for x
    x = 6,242,900,724.47/90,706.79
  6. Step 6: Final answer
    x = 68,825.07

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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.