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Finding the Fourth Proportional to 63,172.89, 87,178.01 and 34,878.78

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Solution

The fourth proportional to 63,172.89, 87,178.01 and 34,878.78 is: 48,132.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,172.89 : 87,178.01 = 34,878.78 : x
  2. Step 2: Convert to fraction form
    63,172.89/87,178.01 = 34,878.78/x
  3. Step 3: Cross multiply
    63,172.89x = 87,178.01 × 34,878.78
  4. Step 4: Simplify right side
    63,172.89x = 3,040,662,457.23
  5. Step 5: Solve for x
    x = 3,040,662,457.23/63,172.89
  6. Step 6: Final answer
    x = 48,132.39

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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.