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Finding the Fourth Proportional to 50,712.88, 69,983.50 and 28,356.88

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Solution

The fourth proportional to 50,712.88, 69,983.50 and 28,356.88 is: 39,132.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,712.88 : 69,983.50 = 28,356.88 : x
  2. Step 2: Convert to fraction form
    50,712.88/69,983.50 = 28,356.88/x
  3. Step 3: Cross multiply
    50,712.88x = 69,983.50 × 28,356.88
  4. Step 4: Simplify right side
    50,712.88x = 1,984,513,711.48
  5. Step 5: Solve for x
    x = 1,984,513,711.48/50,712.88
  6. Step 6: Final answer
    x = 39,132.34

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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.