Home / 72,910.70-109,366.05-43,313.30

Finding the Fourth Proportional to 72,910.70, 109,366.05 and 43,313.30

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Solution

The fourth proportional to 72,910.70, 109,366.05 and 43,313.30 is: 64,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,910.70 : 109,366.05 = 43,313.30 : x
  2. Step 2: Convert to fraction form
    72,910.70/109,366.05 = 43,313.30/x
  3. Step 3: Cross multiply
    72,910.70x = 109,366.05 × 43,313.30
  4. Step 4: Simplify right side
    72,910.70x = 4,737,004,533.47
  5. Step 5: Solve for x
    x = 4,737,004,533.47/72,910.70
  6. Step 6: Final answer
    x = 64,969.95

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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.