Home / 80,417.28-120,632.58-30,497.31

Finding the Fourth Proportional to 80,417.28, 120,632.58 and 30,497.31

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Solution

The fourth proportional to 80,417.28, 120,632.58 and 30,497.31 is: 45,748.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,417.28 : 120,632.58 = 30,497.31 : x
  2. Step 2: Convert to fraction form
    80,417.28/120,632.58 = 30,497.31/x
  3. Step 3: Cross multiply
    80,417.28x = 120,632.58 × 30,497.31
  4. Step 4: Simplify right side
    80,417.28x = 3,678,969,188.36
  5. Step 5: Solve for x
    x = 3,678,969,188.36/80,417.28
  6. Step 6: Final answer
    x = 45,748.49

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1.5x scale

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.