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Finding the Fourth Proportional to 63,378.40, 87,615.12 and 48,344.80

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Solution

The fourth proportional to 63,378.40, 87,615.12 and 48,344.80 is: 66,832.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,378.40 : 87,615.12 = 48,344.80 : x
  2. Step 2: Convert to fraction form
    63,378.40/87,615.12 = 48,344.80/x
  3. Step 3: Cross multiply
    63,378.40x = 87,615.12 × 48,344.80
  4. Step 4: Simplify right side
    63,378.40x = 4,235,735,453.38
  5. Step 5: Solve for x
    x = 4,235,735,453.38/63,378.40
  6. Step 6: Final answer
    x = 66,832.48

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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.