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Finding the Fourth Proportional to 63,711.36, 87,918.72 and 35,416.80

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Solution

The fourth proportional to 63,711.36, 87,918.72 and 35,416.80 is: 48,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,711.36 : 87,918.72 = 35,416.80 : x
  2. Step 2: Convert to fraction form
    63,711.36/87,918.72 = 35,416.80/x
  3. Step 3: Cross multiply
    63,711.36x = 87,918.72 × 35,416.80
  4. Step 4: Simplify right side
    63,711.36x = 3,113,799,722.50
  5. Step 5: Solve for x
    x = 3,113,799,722.50/63,711.36
  6. Step 6: Final answer
    x = 48,873.54

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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.