Home / 43,319.04-64,991.07-21,145.20

Finding the Fourth Proportional to 43,319.04, 64,991.07 and 21,145.20

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Solution

The fourth proportional to 43,319.04, 64,991.07 and 21,145.20 is: 31,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,319.04 : 64,991.07 = 21,145.20 : x
  2. Step 2: Convert to fraction form
    43,319.04/64,991.07 = 21,145.20/x
  3. Step 3: Cross multiply
    43,319.04x = 64,991.07 × 21,145.20
  4. Step 4: Simplify right side
    43,319.04x = 1,374,249,173.36
  5. Step 5: Solve for x
    x = 1,374,249,173.36/43,319.04
  6. Step 6: Final answer
    x = 31,723.91

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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.