Home / 65,421.12-98,117.92-18,661.44

Finding the Fourth Proportional to 65,421.12, 98,117.92 and 18,661.44

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Solution

The fourth proportional to 65,421.12, 98,117.92 and 18,661.44 is: 27,988.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,421.12 : 98,117.92 = 18,661.44 : x
  2. Step 2: Convert to fraction form
    65,421.12/98,117.92 = 18,661.44/x
  3. Step 3: Cross multiply
    65,421.12x = 98,117.92 × 18,661.44
  4. Step 4: Simplify right side
    65,421.12x = 1,831,021,677.00
  5. Step 5: Solve for x
    x = 1,831,021,677.00/65,421.12
  6. Step 6: Final answer
    x = 27,988.23

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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.