Home / 51,431.42-77,153.34-18,144.65

Finding the Fourth Proportional to 51,431.42, 77,153.34 and 18,144.65

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Solution

The fourth proportional to 51,431.42, 77,153.34 and 18,144.65 is: 27,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.42 : 77,153.34 = 18,144.65 : x
  2. Step 2: Convert to fraction form
    51,431.42/77,153.34 = 18,144.65/x
  3. Step 3: Cross multiply
    51,431.42x = 77,153.34 × 18,144.65
  4. Step 4: Simplify right side
    51,431.42x = 1,399,920,350.63
  5. Step 5: Solve for x
    x = 1,399,920,350.63/51,431.42
  6. Step 6: Final answer
    x = 27,219.17

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1.5x scale

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.