Home / 55,015.40-75,921.48-31,146.68

Finding the Fourth Proportional to 55,015.40, 75,921.48 and 31,146.68

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Solution

The fourth proportional to 55,015.40, 75,921.48 and 31,146.68 is: 42,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,015.40 : 75,921.48 = 31,146.68 : x
  2. Step 2: Convert to fraction form
    55,015.40/75,921.48 = 31,146.68/x
  3. Step 3: Cross multiply
    55,015.40x = 75,921.48 × 31,146.68
  4. Step 4: Simplify right side
    55,015.40x = 2,364,702,042.69
  5. Step 5: Solve for x
    x = 2,364,702,042.69/55,015.40
  6. Step 6: Final answer
    x = 42,982.55

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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.