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Finding the Fourth Proportional to 40,572, 60,865.68 and 18,684

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Solution

The fourth proportional to 40,572, 60,865.68 and 18,684 is: 28,029.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,572 : 60,865.68 = 18,684 : x
  2. Step 2: Convert to fraction form
    40,572/60,865.68 = 18,684/x
  3. Step 3: Cross multiply
    40,572x = 60,865.68 × 18,684
  4. Step 4: Simplify right side
    40,572x = 1,137,214,365.12
  5. Step 5: Solve for x
    x = 1,137,214,365.12/40,572
  6. Step 6: Final answer
    x = 28,029.54

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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.