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Finding the Fourth Proportional to 50,490.67, 69,677.46 and 28,974.68

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Solution

The fourth proportional to 50,490.67, 69,677.46 and 28,974.68 is: 39,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,490.67 : 69,677.46 = 28,974.68 : x
  2. Step 2: Convert to fraction form
    50,490.67/69,677.46 = 28,974.68/x
  3. Step 3: Cross multiply
    50,490.67x = 69,677.46 × 28,974.68
  4. Step 4: Simplify right side
    50,490.67x = 2,018,882,106.71
  5. Step 5: Solve for x
    x = 2,018,882,106.71/50,490.67
  6. Step 6: Final answer
    x = 39,985.25

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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.