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Finding the Fourth Proportional to 71,646.90, 107,579.70 and 55,025.70

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Solution

The fourth proportional to 71,646.90, 107,579.70 and 55,025.70 is: 82,622.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,646.90 : 107,579.70 = 55,025.70 : x
  2. Step 2: Convert to fraction form
    71,646.90/107,579.70 = 55,025.70/x
  3. Step 3: Cross multiply
    71,646.90x = 107,579.70 × 55,025.70
  4. Step 4: Simplify right side
    71,646.90x = 5,919,648,298.29
  5. Step 5: Solve for x
    x = 5,919,648,298.29/71,646.90
  6. Step 6: Final answer
    x = 82,622.53

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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.