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Finding the Fourth Proportional to 72,382.46, 99,887.46 and 40,551.62

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Solution

The fourth proportional to 72,382.46, 99,887.46 and 40,551.62 is: 55,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,382.46 : 99,887.46 = 40,551.62 : x
  2. Step 2: Convert to fraction form
    72,382.46/99,887.46 = 40,551.62/x
  3. Step 3: Cross multiply
    72,382.46x = 99,887.46 × 40,551.62
  4. Step 4: Simplify right side
    72,382.46x = 4,050,598,320.69
  5. Step 5: Solve for x
    x = 4,050,598,320.69/72,382.46
  6. Step 6: Final answer
    x = 55,961.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.