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Finding the Fourth Proportional to 56,761.88, 85,089.89 and 19,296.35

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Solution

The fourth proportional to 56,761.88, 85,089.89 and 19,296.35 is: 28,926.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,761.88 : 85,089.89 = 19,296.35 : x
  2. Step 2: Convert to fraction form
    56,761.88/85,089.89 = 19,296.35/x
  3. Step 3: Cross multiply
    56,761.88x = 85,089.89 × 19,296.35
  4. Step 4: Simplify right side
    56,761.88x = 1,641,923,776.97
  5. Step 5: Solve for x
    x = 1,641,923,776.97/56,761.88
  6. Step 6: Final answer
    x = 28,926.52

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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.