Home / 72,351,274.68-108,465,908.90-31,379,867.78

Finding the Fourth Proportional to 72,351,274.68, 108,465,908.90 and 31,379,867.78

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Solution

The fourth proportional to 72,351,274.68, 108,465,908.90 and 31,379,867.78 is: 47,043,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,351,274.68 : 108,465,908.90 = 31,379,867.78 : x
  2. Step 2: Convert to fraction form
    72,351,274.68/108,465,908.90 = 31,379,867.78/x
  3. Step 3: Cross multiply
    72,351,274.68x = 108,465,908.90 × 31,379,867.78
  4. Step 4: Simplify right side
    72,351,274.68x = 3,403,645,879,220,296
  5. Step 5: Solve for x
    x = 3,403,645,879,220,296/72,351,274.68
  6. Step 6: Final answer
    x = 47,043,343.66

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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.