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Finding the Fourth Proportional to 50,574.48, 75,869.96 and 18,987

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Solution

The fourth proportional to 50,574.48, 75,869.96 and 18,987 is: 28,483.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,574.48 : 75,869.96 = 18,987 : x
  2. Step 2: Convert to fraction form
    50,574.48/75,869.96 = 18,987/x
  3. Step 3: Cross multiply
    50,574.48x = 75,869.96 × 18,987
  4. Step 4: Simplify right side
    50,574.48x = 1,440,542,930.52
  5. Step 5: Solve for x
    x = 1,440,542,930.52/50,574.48
  6. Step 6: Final answer
    x = 28,483.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.