Home / 80,869.74-121,300.46-30,946

Finding the Fourth Proportional to 80,869.74, 121,300.46 and 30,946

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Solution

The fourth proportional to 80,869.74, 121,300.46 and 30,946 is: 46,417.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,869.74 : 121,300.46 = 30,946 : x
  2. Step 2: Convert to fraction form
    80,869.74/121,300.46 = 30,946/x
  3. Step 3: Cross multiply
    80,869.74x = 121,300.46 × 30,946
  4. Step 4: Simplify right side
    80,869.74x = 3,753,764,035.16
  5. Step 5: Solve for x
    x = 3,753,764,035.16/80,869.74
  6. Step 6: Final answer
    x = 46,417.41

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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.