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Finding the Fourth Proportional to 63,069, 87,035.22 and 34,775.28

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Solution

The fourth proportional to 63,069, 87,035.22 and 34,775.28 is: 47,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,069 : 87,035.22 = 34,775.28 : x
  2. Step 2: Convert to fraction form
    63,069/87,035.22 = 34,775.28/x
  3. Step 3: Cross multiply
    63,069x = 87,035.22 × 34,775.28
  4. Step 4: Simplify right side
    63,069x = 3,026,674,145.36
  5. Step 5: Solve for x
    x = 3,026,674,145.36/63,069
  6. Step 6: Final answer
    x = 47,989.89

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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.