Home / 71,118.88-98,145.47-39,288.92

Finding the Fourth Proportional to 71,118.88, 98,145.47 and 39,288.92

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Solution

The fourth proportional to 71,118.88, 98,145.47 and 39,288.92 is: 54,219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,118.88 : 98,145.47 = 39,288.92 : x
  2. Step 2: Convert to fraction form
    71,118.88/98,145.47 = 39,288.92/x
  3. Step 3: Cross multiply
    71,118.88x = 98,145.47 × 39,288.92
  4. Step 4: Simplify right side
    71,118.88x = 3,856,029,126.69
  5. Step 5: Solve for x
    x = 3,856,029,126.69/71,118.88
  6. Step 6: Final answer
    x = 54,219.49

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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.