Home / 40,739.78-61,109.94-15,782.60

Finding the Fourth Proportional to 40,739.78, 61,109.94 and 15,782.60

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Solution

The fourth proportional to 40,739.78, 61,109.94 and 15,782.60 is: 23,674.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,739.78 : 61,109.94 = 15,782.60 : x
  2. Step 2: Convert to fraction form
    40,739.78/61,109.94 = 15,782.60/x
  3. Step 3: Cross multiply
    40,739.78x = 61,109.94 × 15,782.60
  4. Step 4: Simplify right side
    40,739.78x = 964,473,739.04
  5. Step 5: Solve for x
    x = 964,473,739.04/40,739.78
  6. Step 6: Final answer
    x = 23,674.00

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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.