Home / 43,402.20-65,030.40-21,167.70

Finding the Fourth Proportional to 43,402.20, 65,030.40 and 21,167.70

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Solution

The fourth proportional to 43,402.20, 65,030.40 and 21,167.70 is: 31,716.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,402.20 : 65,030.40 = 21,167.70 : x
  2. Step 2: Convert to fraction form
    43,402.20/65,030.40 = 21,167.70/x
  3. Step 3: Cross multiply
    43,402.20x = 65,030.40 × 21,167.70
  4. Step 4: Simplify right side
    43,402.20x = 1,376,543,998.08
  5. Step 5: Solve for x
    x = 1,376,543,998.08/43,402.20
  6. Step 6: Final answer
    x = 31,716.00

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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.