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Finding the Fourth Proportional to 27,313,802.80, 40,970,704.20 and 18,704,458.60

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Solution

The fourth proportional to 27,313,802.80, 40,970,704.20 and 18,704,458.60 is: 28,056,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,313,802.80 : 40,970,704.20 = 18,704,458.60 : x
  2. Step 2: Convert to fraction form
    27,313,802.80/40,970,704.20 = 18,704,458.60/x
  3. Step 3: Cross multiply
    27,313,802.80x = 40,970,704.20 × 18,704,458.60
  4. Step 4: Simplify right side
    27,313,802.80x = 766,334,840,521,746.25
  5. Step 5: Solve for x
    x = 766,334,840,521,746.25/27,313,802.80
  6. Step 6: Final answer
    x = 28,056,687.90

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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.