Home / 80,944.80-121,359.60-31,005.60

Finding the Fourth Proportional to 80,944.80, 121,359.60 and 31,005.60

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Solution

The fourth proportional to 80,944.80, 121,359.60 and 31,005.60 is: 46,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,944.80 : 121,359.60 = 31,005.60 : x
  2. Step 2: Convert to fraction form
    80,944.80/121,359.60 = 31,005.60/x
  3. Step 3: Cross multiply
    80,944.80x = 121,359.60 × 31,005.60
  4. Step 4: Simplify right side
    80,944.80x = 3,762,827,213.76
  5. Step 5: Solve for x
    x = 3,762,827,213.76/80,944.80
  6. Step 6: Final answer
    x = 46,486.34

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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.