Home / 54,143.35-81,215.03-51,810.55

Finding the Fourth Proportional to 54,143.35, 81,215.03 and 51,810.55

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Solution

The fourth proportional to 54,143.35, 81,215.03 and 51,810.55 is: 77,715.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,143.35 : 81,215.03 = 51,810.55 : x
  2. Step 2: Convert to fraction form
    54,143.35/81,215.03 = 51,810.55/x
  3. Step 3: Cross multiply
    54,143.35x = 81,215.03 × 51,810.55
  4. Step 4: Simplify right side
    54,143.35x = 4,207,795,113.51
  5. Step 5: Solve for x
    x = 4,207,795,113.51/54,143.35
  6. Step 6: Final answer
    x = 77,715.83

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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.