Home / 72,543,531.30-108,673,579.35-43,703,999.70

Finding the Fourth Proportional to 72,543,531.30, 108,673,579.35 and 43,703,999.70

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Solution

The fourth proportional to 72,543,531.30, 108,673,579.35 and 43,703,999.70 is: 65,470,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543,531.30 : 108,673,579.35 = 43,703,999.70 : x
  2. Step 2: Convert to fraction form
    72,543,531.30/108,673,579.35 = 43,703,999.70/x
  3. Step 3: Cross multiply
    72,543,531.30x = 108,673,579.35 × 43,703,999.70
  4. Step 4: Simplify right side
    72,543,531.30x = 4,749,470,079,310,326
  5. Step 5: Solve for x
    x = 4,749,470,079,310,326/72,543,531.30
  6. Step 6: Final answer
    x = 65,470,621.49

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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.