Home / 55,405.32-83,109.66-21,670.02

Finding the Fourth Proportional to 55,405.32, 83,109.66 and 21,670.02

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Solution

The fourth proportional to 55,405.32, 83,109.66 and 21,670.02 is: 32,505.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,405.32 : 83,109.66 = 21,670.02 : x
  2. Step 2: Convert to fraction form
    55,405.32/83,109.66 = 21,670.02/x
  3. Step 3: Cross multiply
    55,405.32x = 83,109.66 × 21,670.02
  4. Step 4: Simplify right side
    55,405.32x = 1,800,987,994.39
  5. Step 5: Solve for x
    x = 1,800,987,994.39/55,405.32
  6. Step 6: Final answer
    x = 32,505.69

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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.