Home / 65,988.32-98,982.48-21,615.30

Finding the Fourth Proportional to 65,988.32, 98,982.48 and 21,615.30

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Solution

The fourth proportional to 65,988.32, 98,982.48 and 21,615.30 is: 32,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,988.32 : 98,982.48 = 21,615.30 : x
  2. Step 2: Convert to fraction form
    65,988.32/98,982.48 = 21,615.30/x
  3. Step 3: Cross multiply
    65,988.32x = 98,982.48 × 21,615.30
  4. Step 4: Simplify right side
    65,988.32x = 2,139,535,999.94
  5. Step 5: Solve for x
    x = 2,139,535,999.94/65,988.32
  6. Step 6: Final answer
    x = 32,422.95

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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.