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Finding the Fourth Proportional to 53,165.80, 79,742.30 and 21,997.80

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Solution

The fourth proportional to 53,165.80, 79,742.30 and 21,997.80 is: 32,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,165.80 : 79,742.30 = 21,997.80 : x
  2. Step 2: Convert to fraction form
    53,165.80/79,742.30 = 21,997.80/x
  3. Step 3: Cross multiply
    53,165.80x = 79,742.30 × 21,997.80
  4. Step 4: Simplify right side
    53,165.80x = 1,754,155,166.94
  5. Step 5: Solve for x
    x = 1,754,155,166.94/53,165.80
  6. Step 6: Final answer
    x = 32,994.05

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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.