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Finding the Fourth Proportional to 63,165.72, 94,716.89 and 21,030.96

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Solution

The fourth proportional to 63,165.72, 94,716.89 and 21,030.96 is: 31,535.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,165.72 : 94,716.89 = 21,030.96 : x
  2. Step 2: Convert to fraction form
    63,165.72/94,716.89 = 21,030.96/x
  3. Step 3: Cross multiply
    63,165.72x = 94,716.89 × 21,030.96
  4. Step 4: Simplify right side
    63,165.72x = 1,991,987,019.76
  5. Step 5: Solve for x
    x = 1,991,987,019.76/63,165.72
  6. Step 6: Final answer
    x = 31,535.89

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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.