Home / 72,291,279.40-108,520,899.90-43,569,845.80

Finding the Fourth Proportional to 72,291,279.40, 108,520,899.90 and 43,569,845.80

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Solution

The fourth proportional to 72,291,279.40, 108,520,899.90 and 43,569,845.80 is: 65,405,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,291,279.40 : 108,520,899.90 = 43,569,845.80 : x
  2. Step 2: Convert to fraction form
    72,291,279.40/108,520,899.90 = 43,569,845.80/x
  3. Step 3: Cross multiply
    72,291,279.40x = 108,520,899.90 × 43,569,845.80
  4. Step 4: Simplify right side
    72,291,279.40x = 4,728,238,874,720,235
  5. Step 5: Solve for x
    x = 4,728,238,874,720,235/72,291,279.40
  6. Step 6: Final answer
    x = 65,405,383.80

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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.