Home / 51,431.90-77,154.01-18,145.08

Finding the Fourth Proportional to 51,431.90, 77,154.01 and 18,145.08

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Solution

The fourth proportional to 51,431.90, 77,154.01 and 18,145.08 is: 27,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.90 : 77,154.01 = 18,145.08 : x
  2. Step 2: Convert to fraction form
    51,431.90/77,154.01 = 18,145.08/x
  3. Step 3: Cross multiply
    51,431.90x = 77,154.01 × 18,145.08
  4. Step 4: Simplify right side
    51,431.90x = 1,399,965,638.41
  5. Step 5: Solve for x
    x = 1,399,965,638.41/51,431.90
  6. Step 6: Final answer
    x = 27,219.80

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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.