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Finding the Fourth Proportional to 56,229.21, 84,357.65 and 39,621.68

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Solution

The fourth proportional to 56,229.21, 84,357.65 and 39,621.68 is: 59,442.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,229.21 : 84,357.65 = 39,621.68 : x
  2. Step 2: Convert to fraction form
    56,229.21/84,357.65 = 39,621.68/x
  3. Step 3: Cross multiply
    56,229.21x = 84,357.65 × 39,621.68
  4. Step 4: Simplify right side
    56,229.21x = 3,342,391,807.46
  5. Step 5: Solve for x
    x = 3,342,391,807.46/56,229.21
  6. Step 6: Final answer
    x = 59,442.27

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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.