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Finding the Fourth Proportional to 63,311.84, 87,387.60 and 39,424.40

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Solution

The fourth proportional to 63,311.84, 87,387.60 and 39,424.40 is: 54,416.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,311.84 : 87,387.60 = 39,424.40 : x
  2. Step 2: Convert to fraction form
    63,311.84/87,387.60 = 39,424.40/x
  3. Step 3: Cross multiply
    63,311.84x = 87,387.60 × 39,424.40
  4. Step 4: Simplify right side
    63,311.84x = 3,445,203,697.44
  5. Step 5: Solve for x
    x = 3,445,203,697.44/63,311.84
  6. Step 6: Final answer
    x = 54,416.42

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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.