Home / 65,719.78-98,554.08-21,335.80

Finding the Fourth Proportional to 65,719.78, 98,554.08 and 21,335.80

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Solution

The fourth proportional to 65,719.78, 98,554.08 and 21,335.80 is: 31,995.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,719.78 : 98,554.08 = 21,335.80 : x
  2. Step 2: Convert to fraction form
    65,719.78/98,554.08 = 21,335.80/x
  3. Step 3: Cross multiply
    65,719.78x = 98,554.08 × 21,335.80
  4. Step 4: Simplify right side
    65,719.78x = 2,102,730,140.06
  5. Step 5: Solve for x
    x = 2,102,730,140.06/65,719.78
  6. Step 6: Final answer
    x = 31,995.39

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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.