Home / 65,412.90-98,120.25-18,665.76

Finding the Fourth Proportional to 65,412.90, 98,120.25 and 18,665.76

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Solution

The fourth proportional to 65,412.90, 98,120.25 and 18,665.76 is: 27,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,412.90 : 98,120.25 = 18,665.76 : x
  2. Step 2: Convert to fraction form
    65,412.90/98,120.25 = 18,665.76/x
  3. Step 3: Cross multiply
    65,412.90x = 98,120.25 × 18,665.76
  4. Step 4: Simplify right side
    65,412.90x = 1,831,489,037.64
  5. Step 5: Solve for x
    x = 1,831,489,037.64/65,412.90
  6. Step 6: Final answer
    x = 27,998.90

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1.5x scale

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.