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Finding the Fourth Proportional to 63,330.72, 95,005.80 and 21,768

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Solution

The fourth proportional to 63,330.72, 95,005.80 and 21,768 is: 32,655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,330.72 : 95,005.80 = 21,768 : x
  2. Step 2: Convert to fraction form
    63,330.72/95,005.80 = 21,768/x
  3. Step 3: Cross multiply
    63,330.72x = 95,005.80 × 21,768
  4. Step 4: Simplify right side
    63,330.72x = 2,068,086,254.40
  5. Step 5: Solve for x
    x = 2,068,086,254.40/63,330.72
  6. Step 6: Final answer
    x = 32,655.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.