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Finding the Fourth Proportional to 27,208,312.80, 40,812,469.20 and 18,714,847.20

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Solution

The fourth proportional to 27,208,312.80, 40,812,469.20 and 18,714,847.20 is: 28,072,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,208,312.80 : 40,812,469.20 = 18,714,847.20 : x
  2. Step 2: Convert to fraction form
    27,208,312.80/40,812,469.20 = 18,714,847.20/x
  3. Step 3: Cross multiply
    27,208,312.80x = 40,812,469.20 × 18,714,847.20
  4. Step 4: Simplify right side
    27,208,312.80x = 763,799,124,932,706.25
  5. Step 5: Solve for x
    x = 763,799,124,932,706.25/27,208,312.80
  6. Step 6: Final answer
    x = 28,072,270.80

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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.