Home / 55,919.07-77,168.31-30,768.57

Finding the Fourth Proportional to 55,919.07, 77,168.31 and 30,768.57

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Solution

The fourth proportional to 55,919.07, 77,168.31 and 30,768.57 is: 42,460.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,919.07 : 77,168.31 = 30,768.57 : x
  2. Step 2: Convert to fraction form
    55,919.07/77,168.31 = 30,768.57/x
  3. Step 3: Cross multiply
    55,919.07x = 77,168.31 × 30,768.57
  4. Step 4: Simplify right side
    55,919.07x = 2,374,358,548.02
  5. Step 5: Solve for x
    x = 2,374,358,548.02/55,919.07
  6. Step 6: Final answer
    x = 42,460.62

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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.