Home / 72,148.22-99,563.07-39,884.20

Finding the Fourth Proportional to 72,148.22, 99,563.07 and 39,884.20

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Solution

The fourth proportional to 72,148.22, 99,563.07 and 39,884.20 is: 55,039.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.22 : 99,563.07 = 39,884.20 : x
  2. Step 2: Convert to fraction form
    72,148.22/99,563.07 = 39,884.20/x
  3. Step 3: Cross multiply
    72,148.22x = 99,563.07 × 39,884.20
  4. Step 4: Simplify right side
    72,148.22x = 3,970,992,960.91
  5. Step 5: Solve for x
    x = 3,970,992,960.91/72,148.22
  6. Step 6: Final answer
    x = 55,039.38

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1.5x scale

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.