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Finding the Fourth Proportional to 92,812.88, 128,081.03 and 50,371.43

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Solution

The fourth proportional to 92,812.88, 128,081.03 and 50,371.43 is: 69,512.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,812.88 : 128,081.03 = 50,371.43 : x
  2. Step 2: Convert to fraction form
    92,812.88/128,081.03 = 50,371.43/x
  3. Step 3: Cross multiply
    92,812.88x = 128,081.03 × 50,371.43
  4. Step 4: Simplify right side
    92,812.88x = 6,451,623,744.71
  5. Step 5: Solve for x
    x = 6,451,623,744.71/92,812.88
  6. Step 6: Final answer
    x = 69,512.16

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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.