Home / 65,405.80-98,158.38-47,921.32

Finding the Fourth Proportional to 65,405.80, 98,158.38 and 47,921.32

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Solution

The fourth proportional to 65,405.80, 98,158.38 and 47,921.32 is: 71,918.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,405.80 : 98,158.38 = 47,921.32 : x
  2. Step 2: Convert to fraction form
    65,405.80/98,158.38 = 47,921.32/x
  3. Step 3: Cross multiply
    65,405.80x = 98,158.38 × 47,921.32
  4. Step 4: Simplify right side
    65,405.80x = 4,703,879,138.66
  5. Step 5: Solve for x
    x = 4,703,879,138.66/65,405.80
  6. Step 6: Final answer
    x = 71,918.38

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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.