Home / 71,145.45-98,171.73-39,314.48

Finding the Fourth Proportional to 71,145.45, 98,171.73 and 39,314.48

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Solution

The fourth proportional to 71,145.45, 98,171.73 and 39,314.48 is: 54,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,145.45 : 98,171.73 = 39,314.48 : x
  2. Step 2: Convert to fraction form
    71,145.45/98,171.73 = 39,314.48/x
  3. Step 3: Cross multiply
    71,145.45x = 98,171.73 × 39,314.48
  4. Step 4: Simplify right side
    71,145.45x = 3,859,570,024.79
  5. Step 5: Solve for x
    x = 3,859,570,024.79/71,145.45
  6. Step 6: Final answer
    x = 54,249.01

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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.