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Finding the Fourth Proportional to 63,784.79, 95,688.80 and 21,092.66

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Solution

The fourth proportional to 63,784.79, 95,688.80 and 21,092.66 is: 31,642.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,784.79 : 95,688.80 = 21,092.66 : x
  2. Step 2: Convert to fraction form
    63,784.79/95,688.80 = 21,092.66/x
  3. Step 3: Cross multiply
    63,784.79x = 95,688.80 × 21,092.66
  4. Step 4: Simplify right side
    63,784.79x = 2,018,331,218.74
  5. Step 5: Solve for x
    x = 2,018,331,218.74/63,784.79
  6. Step 6: Final answer
    x = 31,642.83

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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.