Home / 56,665.20-84,997.80-19,729.20

Finding the Fourth Proportional to 56,665.20, 84,997.80 and 19,729.20

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Solution

The fourth proportional to 56,665.20, 84,997.80 and 19,729.20 is: 29,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,665.20 : 84,997.80 = 19,729.20 : x
  2. Step 2: Convert to fraction form
    56,665.20/84,997.80 = 19,729.20/x
  3. Step 3: Cross multiply
    56,665.20x = 84,997.80 × 19,729.20
  4. Step 4: Simplify right side
    56,665.20x = 1,676,938,595.76
  5. Step 5: Solve for x
    x = 1,676,938,595.76/56,665.20
  6. Step 6: Final answer
    x = 29,593.80

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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.