Home / 72,631.02-108,943.56-20,039.16

Finding the Fourth Proportional to 72,631.02, 108,943.56 and 20,039.16

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Solution

The fourth proportional to 72,631.02, 108,943.56 and 20,039.16 is: 30,057.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,631.02 : 108,943.56 = 20,039.16 : x
  2. Step 2: Convert to fraction form
    72,631.02/108,943.56 = 20,039.16/x
  3. Step 3: Cross multiply
    72,631.02x = 108,943.56 × 20,039.16
  4. Step 4: Simplify right side
    72,631.02x = 2,183,137,429.81
  5. Step 5: Solve for x
    x = 2,183,137,429.81/72,631.02
  6. Step 6: Final answer
    x = 30,057.92

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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.