Home / 65,399.16-98,115.75-18,655.68

Finding the Fourth Proportional to 65,399.16, 98,115.75 and 18,655.68

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Solution

The fourth proportional to 65,399.16, 98,115.75 and 18,655.68 is: 27,988.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,399.16 : 98,115.75 = 18,655.68 : x
  2. Step 2: Convert to fraction form
    65,399.16/98,115.75 = 18,655.68/x
  3. Step 3: Cross multiply
    65,399.16x = 98,115.75 × 18,655.68
  4. Step 4: Simplify right side
    65,399.16x = 1,830,416,034.96
  5. Step 5: Solve for x
    x = 1,830,416,034.96/65,399.16
  6. Step 6: Final answer
    x = 27,988.37

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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.