Home / 80,946.80-121,362.60-31,007.60

Finding the Fourth Proportional to 80,946.80, 121,362.60 and 31,007.60

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Solution

The fourth proportional to 80,946.80, 121,362.60 and 31,007.60 is: 46,489.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,946.80 : 121,362.60 = 31,007.60 : x
  2. Step 2: Convert to fraction form
    80,946.80/121,362.60 = 31,007.60/x
  3. Step 3: Cross multiply
    80,946.80x = 121,362.60 × 31,007.60
  4. Step 4: Simplify right side
    80,946.80x = 3,763,162,955.76
  5. Step 5: Solve for x
    x = 3,763,162,955.76/80,946.80
  6. Step 6: Final answer
    x = 46,489.34

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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.