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Finding the Fourth Proportional to 72,305.70, 108,458.55 and 37,313.70

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Solution

The fourth proportional to 72,305.70, 108,458.55 and 37,313.70 is: 55,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,305.70 : 108,458.55 = 37,313.70 : x
  2. Step 2: Convert to fraction form
    72,305.70/108,458.55 = 37,313.70/x
  3. Step 3: Cross multiply
    72,305.70x = 108,458.55 × 37,313.70
  4. Step 4: Simplify right side
    72,305.70x = 4,046,989,797.14
  5. Step 5: Solve for x
    x = 4,046,989,797.14/72,305.70
  6. Step 6: Final answer
    x = 55,970.55

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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.