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Finding the Fourth Proportional to 72,610.56, 108,916.32 and 20,022.88

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Solution

The fourth proportional to 72,610.56, 108,916.32 and 20,022.88 is: 30,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,610.56 : 108,916.32 = 20,022.88 : x
  2. Step 2: Convert to fraction form
    72,610.56/108,916.32 = 20,022.88/x
  3. Step 3: Cross multiply
    72,610.56x = 108,916.32 × 20,022.88
  4. Step 4: Simplify right side
    72,610.56x = 2,180,818,405.40
  5. Step 5: Solve for x
    x = 2,180,818,405.40/72,610.56
  6. Step 6: Final answer
    x = 30,034.45

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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.