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Finding the Fourth Proportional to 66,273.83, 99,417.65 and 21,283.82

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Solution

The fourth proportional to 66,273.83, 99,417.65 and 21,283.82 is: 31,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,273.83 : 99,417.65 = 21,283.82 : x
  2. Step 2: Convert to fraction form
    66,273.83/99,417.65 = 21,283.82/x
  3. Step 3: Cross multiply
    66,273.83x = 99,417.65 × 21,283.82
  4. Step 4: Simplify right side
    66,273.83x = 2,115,987,367.42
  5. Step 5: Solve for x
    x = 2,115,987,367.42/66,273.83
  6. Step 6: Final answer
    x = 31,927.95

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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.