Home / 55,756.62-76,936.01-31,878.68

Finding the Fourth Proportional to 55,756.62, 76,936.01 and 31,878.68

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Solution

The fourth proportional to 55,756.62, 76,936.01 and 31,878.68 is: 43,987.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,756.62 : 76,936.01 = 31,878.68 : x
  2. Step 2: Convert to fraction form
    55,756.62/76,936.01 = 31,878.68/x
  3. Step 3: Cross multiply
    55,756.62x = 76,936.01 × 31,878.68
  4. Step 4: Simplify right side
    55,756.62x = 2,452,617,899.19
  5. Step 5: Solve for x
    x = 2,452,617,899.19/55,756.62
  6. Step 6: Final answer
    x = 43,987.92

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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.