Home / 66,276.83-99,422.15-21,286.82

Finding the Fourth Proportional to 66,276.83, 99,422.15 and 21,286.82

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Solution

The fourth proportional to 66,276.83, 99,422.15 and 21,286.82 is: 31,932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,276.83 : 99,422.15 = 21,286.82 : x
  2. Step 2: Convert to fraction form
    66,276.83/99,422.15 = 21,286.82/x
  3. Step 3: Cross multiply
    66,276.83x = 99,422.15 × 21,286.82
  4. Step 4: Simplify right side
    66,276.83x = 2,116,381,411.06
  5. Step 5: Solve for x
    x = 2,116,381,411.06/66,276.83
  6. Step 6: Final answer
    x = 31,932.45

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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.