Home / 71,905.13-107,857.70-21,985.23

Finding the Fourth Proportional to 71,905.13, 107,857.70 and 21,985.23

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Solution

The fourth proportional to 71,905.13, 107,857.70 and 21,985.23 is: 32,977.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,905.13 : 107,857.70 = 21,985.23 : x
  2. Step 2: Convert to fraction form
    71,905.13/107,857.70 = 21,985.23/x
  3. Step 3: Cross multiply
    71,905.13x = 107,857.70 × 21,985.23
  4. Step 4: Simplify right side
    71,905.13x = 2,371,276,231.84
  5. Step 5: Solve for x
    x = 2,371,276,231.84/71,905.13
  6. Step 6: Final answer
    x = 32,977.85

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Similar ratio
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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.