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Finding the Fourth Proportional to 28,979,640.80, 43,469,461.20 and 17,642,232.80

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Solution

The fourth proportional to 28,979,640.80, 43,469,461.20 and 17,642,232.80 is: 26,463,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979,640.80 : 43,469,461.20 = 17,642,232.80 : x
  2. Step 2: Convert to fraction form
    28,979,640.80/43,469,461.20 = 17,642,232.80/x
  3. Step 3: Cross multiply
    28,979,640.80x = 43,469,461.20 × 17,642,232.80
  4. Step 4: Simplify right side
    28,979,640.80x = 766,898,354,180,967.50
  5. Step 5: Solve for x
    x = 766,898,354,180,967.50/28,979,640.80
  6. Step 6: Final answer
    x = 26,463,349.20

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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.