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Finding the Fourth Proportional to 66,167.76, 99,266.64 and 21,798.96

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Solution

The fourth proportional to 66,167.76, 99,266.64 and 21,798.96 is: 32,703.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,167.76 : 99,266.64 = 21,798.96 : x
  2. Step 2: Convert to fraction form
    66,167.76/99,266.64 = 21,798.96/x
  3. Step 3: Cross multiply
    66,167.76x = 99,266.64 × 21,798.96
  4. Step 4: Simplify right side
    66,167.76x = 2,163,909,514.69
  5. Step 5: Solve for x
    x = 2,163,909,514.69/66,167.76
  6. Step 6: Final answer
    x = 32,703.38

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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.