Home / 55,147.78-82,681.34-17,686.53

Finding the Fourth Proportional to 55,147.78, 82,681.34 and 17,686.53

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Solution

The fourth proportional to 55,147.78, 82,681.34 and 17,686.53 is: 26,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,147.78 : 82,681.34 = 17,686.53 : x
  2. Step 2: Convert to fraction form
    55,147.78/82,681.34 = 17,686.53/x
  3. Step 3: Cross multiply
    55,147.78x = 82,681.34 × 17,686.53
  4. Step 4: Simplify right side
    55,147.78x = 1,462,346,000.35
  5. Step 5: Solve for x
    x = 1,462,346,000.35/55,147.78
  6. Step 6: Final answer
    x = 26,516.86

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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.