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Finding the Fourth Proportional to 63,216.32, 87,255.88 and 39,328.74

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Solution

The fourth proportional to 63,216.32, 87,255.88 and 39,328.74 is: 54,284.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,216.32 : 87,255.88 = 39,328.74 : x
  2. Step 2: Convert to fraction form
    63,216.32/87,255.88 = 39,328.74/x
  3. Step 3: Cross multiply
    63,216.32x = 87,255.88 × 39,328.74
  4. Step 4: Simplify right side
    63,216.32x = 3,431,663,817.99
  5. Step 5: Solve for x
    x = 3,431,663,817.99/63,216.32
  6. Step 6: Final answer
    x = 54,284.46

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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.