Home / 40,128,093.72-55,378,132.44-38,289,359.79

Finding the Fourth Proportional to 40,128,093.72, 55,378,132.44 and 38,289,359.79

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Solution

The fourth proportional to 40,128,093.72, 55,378,132.44 and 38,289,359.79 is: 52,840,617.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128,093.72 : 55,378,132.44 = 38,289,359.79 : x
  2. Step 2: Convert to fraction form
    40,128,093.72/55,378,132.44 = 38,289,359.79/x
  3. Step 3: Cross multiply
    40,128,093.72x = 55,378,132.44 × 38,289,359.79
  4. Step 4: Simplify right side
    40,128,093.72x = 2,120,393,237,493,430.50
  5. Step 5: Solve for x
    x = 2,120,393,237,493,430.50/40,128,093.72
  6. Step 6: Final answer
    x = 52,840,617.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.