Home / 55,068.45-75,989.75-30,540.05

Finding the Fourth Proportional to 55,068.45, 75,989.75 and 30,540.05

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Solution

The fourth proportional to 55,068.45, 75,989.75 and 30,540.05 is: 42,142.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,068.45 : 75,989.75 = 30,540.05 : x
  2. Step 2: Convert to fraction form
    55,068.45/75,989.75 = 30,540.05/x
  3. Step 3: Cross multiply
    55,068.45x = 75,989.75 × 30,540.05
  4. Step 4: Simplify right side
    55,068.45x = 2,320,730,764.49
  5. Step 5: Solve for x
    x = 2,320,730,764.49/55,068.45
  6. Step 6: Final answer
    x = 42,142.66

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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.