Home / 51,135.12-76,706.18-17,387.40

Finding the Fourth Proportional to 51,135.12, 76,706.18 and 17,387.40

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Solution

The fourth proportional to 51,135.12, 76,706.18 and 17,387.40 is: 26,082.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,135.12 : 76,706.18 = 17,387.40 : x
  2. Step 2: Convert to fraction form
    51,135.12/76,706.18 = 17,387.40/x
  3. Step 3: Cross multiply
    51,135.12x = 76,706.18 × 17,387.40
  4. Step 4: Simplify right side
    51,135.12x = 1,333,720,947.20
  5. Step 5: Solve for x
    x = 1,333,720,947.20/51,135.12
  6. Step 6: Final answer
    x = 26,082.29

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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.