Home / 72,947.64-100,666.35-41,115.90

Finding the Fourth Proportional to 72,947.64, 100,666.35 and 41,115.90

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Solution

The fourth proportional to 72,947.64, 100,666.35 and 41,115.90 is: 56,739.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,947.64 : 100,666.35 = 41,115.90 : x
  2. Step 2: Convert to fraction form
    72,947.64/100,666.35 = 41,115.90/x
  3. Step 3: Cross multiply
    72,947.64x = 100,666.35 × 41,115.90
  4. Step 4: Simplify right side
    72,947.64x = 4,138,987,579.97
  5. Step 5: Solve for x
    x = 4,138,987,579.97/72,947.64
  6. Step 6: Final answer
    x = 56,739.16

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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.