Home / 72,195.08-99,628.26-40,363.64

Finding the Fourth Proportional to 72,195.08, 99,628.26 and 40,363.64

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Solution

The fourth proportional to 72,195.08, 99,628.26 and 40,363.64 is: 55,701.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,195.08 : 99,628.26 = 40,363.64 : x
  2. Step 2: Convert to fraction form
    72,195.08/99,628.26 = 40,363.64/x
  3. Step 3: Cross multiply
    72,195.08x = 99,628.26 × 40,363.64
  4. Step 4: Simplify right side
    72,195.08x = 4,021,359,220.47
  5. Step 5: Solve for x
    x = 4,021,359,220.47/72,195.08
  6. Step 6: Final answer
    x = 55,701.29

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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.