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Finding the Fourth Proportional to 40,710.32, 61,080.86 and 15,751.87

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Solution

The fourth proportional to 40,710.32, 61,080.86 and 15,751.87 is: 23,633.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,710.32 : 61,080.86 = 15,751.87 : x
  2. Step 2: Convert to fraction form
    40,710.32/61,080.86 = 15,751.87/x
  3. Step 3: Cross multiply
    40,710.32x = 61,080.86 × 15,751.87
  4. Step 4: Simplify right side
    40,710.32x = 962,137,608.58
  5. Step 5: Solve for x
    x = 962,137,608.58/40,710.32
  6. Step 6: Final answer
    x = 23,633.75

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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.