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Finding the Fourth Proportional to 50,834.94, 70,154.01 and 30,687.90

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Solution

The fourth proportional to 50,834.94, 70,154.01 and 30,687.90 is: 42,350.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,834.94 : 70,154.01 = 30,687.90 : x
  2. Step 2: Convert to fraction form
    50,834.94/70,154.01 = 30,687.90/x
  3. Step 3: Cross multiply
    50,834.94x = 70,154.01 × 30,687.90
  4. Step 4: Simplify right side
    50,834.94x = 2,152,879,243.48
  5. Step 5: Solve for x
    x = 2,152,879,243.48/50,834.94
  6. Step 6: Final answer
    x = 42,350.38

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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.