Home / 55,987.44-83,921.64-20,911.92

Finding the Fourth Proportional to 55,987.44, 83,921.64 and 20,911.92

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Solution

The fourth proportional to 55,987.44, 83,921.64 and 20,911.92 is: 31,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,987.44 : 83,921.64 = 20,911.92 : x
  2. Step 2: Convert to fraction form
    55,987.44/83,921.64 = 20,911.92/x
  3. Step 3: Cross multiply
    55,987.44x = 83,921.64 × 20,911.92
  4. Step 4: Simplify right side
    55,987.44x = 1,754,962,621.95
  5. Step 5: Solve for x
    x = 1,754,962,621.95/55,987.44
  6. Step 6: Final answer
    x = 31,345.65

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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.