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Finding the Fourth Proportional to 73,813.80, 110,720.70 and 51,652.20

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Solution

The fourth proportional to 73,813.80, 110,720.70 and 51,652.20 is: 77,478.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,813.80 : 110,720.70 = 51,652.20 : x
  2. Step 2: Convert to fraction form
    73,813.80/110,720.70 = 51,652.20/x
  3. Step 3: Cross multiply
    73,813.80x = 110,720.70 × 51,652.20
  4. Step 4: Simplify right side
    73,813.80x = 5,718,967,740.54
  5. Step 5: Solve for x
    x = 5,718,967,740.54/73,813.80
  6. Step 6: Final answer
    x = 77,478.30

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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.