Home / 80,008.74-120,039.03-38,458.98

Finding the Fourth Proportional to 80,008.74, 120,039.03 and 38,458.98

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Solution

The fourth proportional to 80,008.74, 120,039.03 and 38,458.98 is: 57,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,008.74 : 120,039.03 = 38,458.98 : x
  2. Step 2: Convert to fraction form
    80,008.74/120,039.03 = 38,458.98/x
  3. Step 3: Cross multiply
    80,008.74x = 120,039.03 × 38,458.98
  4. Step 4: Simplify right side
    80,008.74x = 4,616,578,653.99
  5. Step 5: Solve for x
    x = 4,616,578,653.99/80,008.74
  6. Step 6: Final answer
    x = 57,700.93

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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.