Home / 77,941.10-107,558.66-42,131.11

Finding the Fourth Proportional to 77,941.10, 107,558.66 and 42,131.11

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Solution

The fourth proportional to 77,941.10, 107,558.66 and 42,131.11 is: 58,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,941.10 : 107,558.66 = 42,131.11 : x
  2. Step 2: Convert to fraction form
    77,941.10/107,558.66 = 42,131.11/x
  3. Step 3: Cross multiply
    77,941.10x = 107,558.66 × 42,131.11
  4. Step 4: Simplify right side
    77,941.10x = 4,531,565,198.12
  5. Step 5: Solve for x
    x = 4,531,565,198.12/77,941.10
  6. Step 6: Final answer
    x = 58,140.90

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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.