Home / 55,412.15-83,138.72-39,742.29

Finding the Fourth Proportional to 55,412.15, 83,138.72 and 39,742.29

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Solution

The fourth proportional to 55,412.15, 83,138.72 and 39,742.29 is: 59,628.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,412.15 : 83,138.72 = 39,742.29 : x
  2. Step 2: Convert to fraction form
    55,412.15/83,138.72 = 39,742.29/x
  3. Step 3: Cross multiply
    55,412.15x = 83,138.72 × 39,742.29
  4. Step 4: Simplify right side
    55,412.15x = 3,304,122,921.76
  5. Step 5: Solve for x
    x = 3,304,122,921.76/55,412.15
  6. Step 6: Final answer
    x = 59,628.14

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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.