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Finding the Fourth Proportional to 31,903,722.60, 47,855,583.90 and 19,117,645.80

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Solution

The fourth proportional to 31,903,722.60, 47,855,583.90 and 19,117,645.80 is: 28,676,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,903,722.60 : 47,855,583.90 = 19,117,645.80 : x
  2. Step 2: Convert to fraction form
    31,903,722.60/47,855,583.90 = 19,117,645.80/x
  3. Step 3: Cross multiply
    31,903,722.60x = 47,855,583.90 × 19,117,645.80
  4. Step 4: Simplify right side
    31,903,722.60x = 914,886,102,552,382.62
  5. Step 5: Solve for x
    x = 914,886,102,552,382.62/31,903,722.60
  6. Step 6: Final answer
    x = 28,676,468.70

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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.