Home / 43,158.81-64,716.13-19,765.20

Finding the Fourth Proportional to 43,158.81, 64,716.13 and 19,765.20

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Solution

The fourth proportional to 43,158.81, 64,716.13 and 19,765.20 is: 29,637.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,158.81 : 64,716.13 = 19,765.20 : x
  2. Step 2: Convert to fraction form
    43,158.81/64,716.13 = 19,765.20/x
  3. Step 3: Cross multiply
    43,158.81x = 64,716.13 × 19,765.20
  4. Step 4: Simplify right side
    43,158.81x = 1,279,127,252.68
  5. Step 5: Solve for x
    x = 1,279,127,252.68/43,158.81
  6. Step 6: Final answer
    x = 29,637.69

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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.