Home / 65,680.40-98,496.30-21,308.60

Finding the Fourth Proportional to 65,680.40, 98,496.30 and 21,308.60

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Solution

The fourth proportional to 65,680.40, 98,496.30 and 21,308.60 is: 31,955.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,680.40 : 98,496.30 = 21,308.60 : x
  2. Step 2: Convert to fraction form
    65,680.40/98,496.30 = 21,308.60/x
  3. Step 3: Cross multiply
    65,680.40x = 98,496.30 × 21,308.60
  4. Step 4: Simplify right side
    65,680.40x = 2,098,818,258.18
  5. Step 5: Solve for x
    x = 2,098,818,258.18/65,680.40
  6. Step 6: Final answer
    x = 31,955.02

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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.