Home / 71,868,000.20-107,802,000.30-28,715,865.80

Finding the Fourth Proportional to 71,868,000.20, 107,802,000.30 and 28,715,865.80

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Solution

The fourth proportional to 71,868,000.20, 107,802,000.30 and 28,715,865.80 is: 43,073,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,868,000.20 : 107,802,000.30 = 28,715,865.80 : x
  2. Step 2: Convert to fraction form
    71,868,000.20/107,802,000.30 = 28,715,865.80/x
  3. Step 3: Cross multiply
    71,868,000.20x = 107,802,000.30 × 28,715,865.80
  4. Step 4: Simplify right side
    71,868,000.20x = 3,095,627,773,586,359.50
  5. Step 5: Solve for x
    x = 3,095,627,773,586,359.50/71,868,000.20
  6. Step 6: Final answer
    x = 43,073,798.70

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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.