Home / 55,015.90-75,922.17-31,147.18

Finding the Fourth Proportional to 55,015.90, 75,922.17 and 31,147.18

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Solution

The fourth proportional to 55,015.90, 75,922.17 and 31,147.18 is: 42,983.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,015.90 : 75,922.17 = 31,147.18 : x
  2. Step 2: Convert to fraction form
    55,015.90/75,922.17 = 31,147.18/x
  3. Step 3: Cross multiply
    55,015.90x = 75,922.17 × 31,147.18
  4. Step 4: Simplify right side
    55,015.90x = 2,364,761,494.98
  5. Step 5: Solve for x
    x = 2,364,761,494.98/55,015.90
  6. Step 6: Final answer
    x = 42,983.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.