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Finding the Fourth Proportional to 63,205.79, 94,798.30 and 21,086.20

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Solution

The fourth proportional to 63,205.79, 94,798.30 and 21,086.20 is: 31,625.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,205.79 : 94,798.30 = 21,086.20 : x
  2. Step 2: Convert to fraction form
    63,205.79/94,798.30 = 21,086.20/x
  3. Step 3: Cross multiply
    63,205.79x = 94,798.30 × 21,086.20
  4. Step 4: Simplify right side
    63,205.79x = 1,998,935,913.46
  5. Step 5: Solve for x
    x = 1,998,935,913.46/63,205.79
  6. Step 6: Final answer
    x = 31,625.84

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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.