Home / 55,917-77,165.46-30,768.12

Finding the Fourth Proportional to 55,917, 77,165.46 and 30,768.12

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Solution

The fourth proportional to 55,917, 77,165.46 and 30,768.12 is: 42,460.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,917 : 77,165.46 = 30,768.12 : x
  2. Step 2: Convert to fraction form
    55,917/77,165.46 = 30,768.12/x
  3. Step 3: Cross multiply
    55,917x = 77,165.46 × 30,768.12
  4. Step 4: Simplify right side
    55,917x = 2,374,236,133.14
  5. Step 5: Solve for x
    x = 2,374,236,133.14/55,917
  6. Step 6: Final answer
    x = 42,460.01

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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.