Home / 68,711.72-103,535.63-56,505.15

Finding the Fourth Proportional to 68,711.72, 103,535.63 and 56,505.15

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Solution

The fourth proportional to 68,711.72, 103,535.63 and 56,505.15 is: 85,142.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,711.72 : 103,535.63 = 56,505.15 : x
  2. Step 2: Convert to fraction form
    68,711.72/103,535.63 = 56,505.15/x
  3. Step 3: Cross multiply
    68,711.72x = 103,535.63 × 56,505.15
  4. Step 4: Simplify right side
    68,711.72x = 5,850,296,020.97
  5. Step 5: Solve for x
    x = 5,850,296,020.97/68,711.72
  6. Step 6: Final answer
    x = 85,142.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.