Home / 68,723.80-103,085.70-53,152.60

Finding the Fourth Proportional to 68,723.80, 103,085.70 and 53,152.60

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Solution

The fourth proportional to 68,723.80, 103,085.70 and 53,152.60 is: 79,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,723.80 : 103,085.70 = 53,152.60 : x
  2. Step 2: Convert to fraction form
    68,723.80/103,085.70 = 53,152.60/x
  3. Step 3: Cross multiply
    68,723.80x = 103,085.70 × 53,152.60
  4. Step 4: Simplify right side
    68,723.80x = 5,479,272,977.82
  5. Step 5: Solve for x
    x = 5,479,272,977.82/68,723.80
  6. Step 6: Final answer
    x = 79,728.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.