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Finding the Fourth Proportional to 63,728.32, 87,938.40 and 35,429.44

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Solution

The fourth proportional to 63,728.32, 87,938.40 and 35,429.44 is: 48,888.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,728.32 : 87,938.40 = 35,429.44 : x
  2. Step 2: Convert to fraction form
    63,728.32/87,938.40 = 35,429.44/x
  3. Step 3: Cross multiply
    63,728.32x = 87,938.40 × 35,429.44
  4. Step 4: Simplify right side
    63,728.32x = 3,115,608,266.50
  5. Step 5: Solve for x
    x = 3,115,608,266.50/63,728.32
  6. Step 6: Final answer
    x = 48,888.91

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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.