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Finding the Fourth Proportional to 50,715.43, 69,981.90 and 28,050.82

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Solution

The fourth proportional to 50,715.43, 69,981.90 and 28,050.82 is: 38,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,715.43 : 69,981.90 = 28,050.82 : x
  2. Step 2: Convert to fraction form
    50,715.43/69,981.90 = 28,050.82/x
  3. Step 3: Cross multiply
    50,715.43x = 69,981.90 × 28,050.82
  4. Step 4: Simplify right side
    50,715.43x = 1,963,049,680.16
  5. Step 5: Solve for x
    x = 1,963,049,680.16/50,715.43
  6. Step 6: Final answer
    x = 38,707.15

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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.