Home / 80,615.27-120,957.74-30,710.36

Finding the Fourth Proportional to 80,615.27, 120,957.74 and 30,710.36

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Solution

The fourth proportional to 80,615.27, 120,957.74 and 30,710.36 is: 46,078.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,615.27 : 120,957.74 = 30,710.36 : x
  2. Step 2: Convert to fraction form
    80,615.27/120,957.74 = 30,710.36/x
  3. Step 3: Cross multiply
    80,615.27x = 120,957.74 × 30,710.36
  4. Step 4: Simplify right side
    80,615.27x = 3,714,655,740.19
  5. Step 5: Solve for x
    x = 3,714,655,740.19/80,615.27
  6. Step 6: Final answer
    x = 46,078.81

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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.