Home / 53,815.43-80,686.64-30,139.25

Finding the Fourth Proportional to 53,815.43, 80,686.64 and 30,139.25

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Solution

The fourth proportional to 53,815.43, 80,686.64 and 30,139.25 is: 45,188.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,815.43 : 80,686.64 = 30,139.25 : x
  2. Step 2: Convert to fraction form
    53,815.43/80,686.64 = 30,139.25/x
  3. Step 3: Cross multiply
    53,815.43x = 80,686.64 × 30,139.25
  4. Step 4: Simplify right side
    53,815.43x = 2,431,834,260.49
  5. Step 5: Solve for x
    x = 2,431,834,260.49/53,815.43
  6. Step 6: Final answer
    x = 45,188.42

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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.