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Finding the Fourth Proportional to 39,749, 54,855.06 and 22,756.28

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Solution

The fourth proportional to 39,749, 54,855.06 and 22,756.28 is: 31,404.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,749 : 54,855.06 = 22,756.28 : x
  2. Step 2: Convert to fraction form
    39,749/54,855.06 = 22,756.28/x
  3. Step 3: Cross multiply
    39,749x = 54,855.06 × 22,756.28
  4. Step 4: Simplify right side
    39,749x = 1,248,297,104.78
  5. Step 5: Solve for x
    x = 1,248,297,104.78/39,749
  6. Step 6: Final answer
    x = 31,404.49

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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.