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Finding the Fourth Proportional to 44,987, 67,434.42 and 18,707

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Solution

The fourth proportional to 44,987, 67,434.42 and 18,707 is: 28,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,987 : 67,434.42 = 18,707 : x
  2. Step 2: Convert to fraction form
    44,987/67,434.42 = 18,707/x
  3. Step 3: Cross multiply
    44,987x = 67,434.42 × 18,707
  4. Step 4: Simplify right side
    44,987x = 1,261,495,694.94
  5. Step 5: Solve for x
    x = 1,261,495,694.94/44,987
  6. Step 6: Final answer
    x = 28,041.34

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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.