Home / 51,507.64-77,120.94-38,989.80

Finding the Fourth Proportional to 51,507.64, 77,120.94 and 38,989.80

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Solution

The fourth proportional to 51,507.64, 77,120.94 and 38,989.80 is: 58,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,507.64 : 77,120.94 = 38,989.80 : x
  2. Step 2: Convert to fraction form
    51,507.64/77,120.94 = 38,989.80/x
  3. Step 3: Cross multiply
    51,507.64x = 77,120.94 × 38,989.80
  4. Step 4: Simplify right side
    51,507.64x = 3,006,930,026.41
  5. Step 5: Solve for x
    x = 3,006,930,026.41/51,507.64
  6. Step 6: Final answer
    x = 58,378.33

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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.