Home / 40,720.32-61,080.53-11,135.97

Finding the Fourth Proportional to 40,720.32, 61,080.53 and 11,135.97

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Solution

The fourth proportional to 40,720.32, 61,080.53 and 11,135.97 is: 16,703.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,720.32 : 61,080.53 = 11,135.97 : x
  2. Step 2: Convert to fraction form
    40,720.32/61,080.53 = 11,135.97/x
  3. Step 3: Cross multiply
    40,720.32x = 61,080.53 × 11,135.97
  4. Step 4: Simplify right side
    40,720.32x = 680,190,893.98
  5. Step 5: Solve for x
    x = 680,190,893.98/40,720.32
  6. Step 6: Final answer
    x = 16,703.97

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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.