Home / 66,218.31-99,306.41-21,836.79

Finding the Fourth Proportional to 66,218.31, 99,306.41 and 21,836.79

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Solution

The fourth proportional to 66,218.31, 99,306.41 and 21,836.79 is: 32,748.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,218.31 : 99,306.41 = 21,836.79 : x
  2. Step 2: Convert to fraction form
    66,218.31/99,306.41 = 21,836.79/x
  3. Step 3: Cross multiply
    66,218.31x = 99,306.41 × 21,836.79
  4. Step 4: Simplify right side
    66,218.31x = 2,168,533,111.64
  5. Step 5: Solve for x
    x = 2,168,533,111.64/66,218.31
  6. Step 6: Final answer
    x = 32,748.24

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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.