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Finding the Fourth Proportional to 89,080.64, 122,900.80 and 50,812.72

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Solution

The fourth proportional to 89,080.64, 122,900.80 and 50,812.72 is: 70,104.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,080.64 : 122,900.80 = 50,812.72 : x
  2. Step 2: Convert to fraction form
    89,080.64/122,900.80 = 50,812.72/x
  3. Step 3: Cross multiply
    89,080.64x = 122,900.80 × 50,812.72
  4. Step 4: Simplify right side
    89,080.64x = 6,244,923,938.18
  5. Step 5: Solve for x
    x = 6,244,923,938.18/89,080.64
  6. Step 6: Final answer
    x = 70,104.17

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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.