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Finding the Fourth Proportional to 73,142.20, 100,866.90 and 50,444.92

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Solution

The fourth proportional to 73,142.20, 100,866.90 and 50,444.92 is: 69,566.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,142.20 : 100,866.90 = 50,444.92 : x
  2. Step 2: Convert to fraction form
    73,142.20/100,866.90 = 50,444.92/x
  3. Step 3: Cross multiply
    73,142.20x = 100,866.90 × 50,444.92
  4. Step 4: Simplify right side
    73,142.20x = 5,088,222,701.15
  5. Step 5: Solve for x
    x = 5,088,222,701.15/73,142.20
  6. Step 6: Final answer
    x = 69,566.17

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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.