Home / 79,623.59-109,891.23-72,897.15

Finding the Fourth Proportional to 79,623.59, 109,891.23 and 72,897.15

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Solution

The fourth proportional to 79,623.59, 109,891.23 and 72,897.15 is: 100,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,623.59 : 109,891.23 = 72,897.15 : x
  2. Step 2: Convert to fraction form
    79,623.59/109,891.23 = 72,897.15/x
  3. Step 3: Cross multiply
    79,623.59x = 109,891.23 × 72,897.15
  4. Step 4: Simplify right side
    79,623.59x = 8,010,757,476.99
  5. Step 5: Solve for x
    x = 8,010,757,476.99/79,623.59
  6. Step 6: Final answer
    x = 100,607.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.