Home / 55,855.74-77,078.97-30,705.06

Finding the Fourth Proportional to 55,855.74, 77,078.97 and 30,705.06

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Solution

The fourth proportional to 55,855.74, 77,078.97 and 30,705.06 is: 42,371.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,855.74 : 77,078.97 = 30,705.06 : x
  2. Step 2: Convert to fraction form
    55,855.74/77,078.97 = 30,705.06/x
  3. Step 3: Cross multiply
    55,855.74x = 77,078.97 × 30,705.06
  4. Step 4: Simplify right side
    55,855.74x = 2,366,714,398.59
  5. Step 5: Solve for x
    x = 2,366,714,398.59/55,855.74
  6. Step 6: Final answer
    x = 42,371.91

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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.