Home / 65,712.59-98,548.20-21,329.09

Finding the Fourth Proportional to 65,712.59, 98,548.20 and 21,329.09

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Solution

The fourth proportional to 65,712.59, 98,548.20 and 21,329.09 is: 31,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,712.59 : 98,548.20 = 21,329.09 : x
  2. Step 2: Convert to fraction form
    65,712.59/98,548.20 = 21,329.09/x
  3. Step 3: Cross multiply
    65,712.59x = 98,548.20 × 21,329.09
  4. Step 4: Simplify right side
    65,712.59x = 2,101,943,427.14
  5. Step 5: Solve for x
    x = 2,101,943,427.14/65,712.59
  6. Step 6: Final answer
    x = 31,986.92

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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.