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Finding the Fourth Proportional to 49,321.78, 74,143.05 and 39,567.76

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Solution

The fourth proportional to 49,321.78, 74,143.05 and 39,567.76 is: 59,480.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,321.78 : 74,143.05 = 39,567.76 : x
  2. Step 2: Convert to fraction form
    49,321.78/74,143.05 = 39,567.76/x
  3. Step 3: Cross multiply
    49,321.78x = 74,143.05 × 39,567.76
  4. Step 4: Simplify right side
    49,321.78x = 2,933,674,408.07
  5. Step 5: Solve for x
    x = 2,933,674,408.07/49,321.78
  6. Step 6: Final answer
    x = 59,480.30

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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.