Home / 72,139,593.32-108,210,965.33-43,409,761.64

Finding the Fourth Proportional to 72,139,593.32, 108,210,965.33 and 43,409,761.64

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Solution

The fourth proportional to 72,139,593.32, 108,210,965.33 and 43,409,761.64 is: 65,115,590.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,139,593.32 : 108,210,965.33 = 43,409,761.64 : x
  2. Step 2: Convert to fraction form
    72,139,593.32/108,210,965.33 = 43,409,761.64/x
  3. Step 3: Cross multiply
    72,139,593.32x = 108,210,965.33 × 43,409,761.64
  4. Step 4: Simplify right side
    72,139,593.32x = 4,697,412,211,377,073
  5. Step 5: Solve for x
    x = 4,697,412,211,377,073/72,139,593.32
  6. Step 6: Final answer
    x = 65,115,590.42

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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.