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Finding the Fourth Proportional to 55,745.80, 83,715.90 and 53,996.20

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Solution

The fourth proportional to 55,745.80, 83,715.90 and 53,996.20 is: 81,088.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,745.80 : 83,715.90 = 53,996.20 : x
  2. Step 2: Convert to fraction form
    55,745.80/83,715.90 = 53,996.20/x
  3. Step 3: Cross multiply
    55,745.80x = 83,715.90 × 53,996.20
  4. Step 4: Simplify right side
    55,745.80x = 4,520,340,479.58
  5. Step 5: Solve for x
    x = 4,520,340,479.58/55,745.80
  6. Step 6: Final answer
    x = 81,088.45

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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.