Home / 40,745.83-61,106.90-15,780.31

Finding the Fourth Proportional to 40,745.83, 61,106.90 and 15,780.31

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Solution

The fourth proportional to 40,745.83, 61,106.90 and 15,780.31 is: 23,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,745.83 : 61,106.90 = 15,780.31 : x
  2. Step 2: Convert to fraction form
    40,745.83/61,106.90 = 15,780.31/x
  3. Step 3: Cross multiply
    40,745.83x = 61,106.90 × 15,780.31
  4. Step 4: Simplify right side
    40,745.83x = 964,285,937.20
  5. Step 5: Solve for x
    x = 964,285,937.20/40,745.83
  6. Step 6: Final answer
    x = 23,665.88

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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.