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Finding the Fourth Proportional to 72,619.59, 109,022.67 and 55,990.18

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Solution

The fourth proportional to 72,619.59, 109,022.67 and 55,990.18 is: 84,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,619.59 : 109,022.67 = 55,990.18 : x
  2. Step 2: Convert to fraction form
    72,619.59/109,022.67 = 55,990.18/x
  3. Step 3: Cross multiply
    72,619.59x = 109,022.67 × 55,990.18
  4. Step 4: Simplify right side
    72,619.59x = 6,104,198,637.43
  5. Step 5: Solve for x
    x = 6,104,198,637.43/72,619.59
  6. Step 6: Final answer
    x = 84,057.20

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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.