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Finding the Fourth Proportional to 50,478.66, 69,660.83 and 28,966.70

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Solution

The fourth proportional to 50,478.66, 69,660.83 and 28,966.70 is: 39,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,478.66 : 69,660.83 = 28,966.70 : x
  2. Step 2: Convert to fraction form
    50,478.66/69,660.83 = 28,966.70/x
  3. Step 3: Cross multiply
    50,478.66x = 69,660.83 × 28,966.70
  4. Step 4: Simplify right side
    50,478.66x = 2,017,843,925.54
  5. Step 5: Solve for x
    x = 2,017,843,925.54/50,478.66
  6. Step 6: Final answer
    x = 39,974.20

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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.