Home / 71,129.35-98,157.35-38,863.28

Finding the Fourth Proportional to 71,129.35, 98,157.35 and 38,863.28

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Solution

The fourth proportional to 71,129.35, 98,157.35 and 38,863.28 is: 53,630.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,129.35 : 98,157.35 = 38,863.28 : x
  2. Step 2: Convert to fraction form
    71,129.35/98,157.35 = 38,863.28/x
  3. Step 3: Cross multiply
    71,129.35x = 98,157.35 × 38,863.28
  4. Step 4: Simplify right side
    71,129.35x = 3,814,716,367.52
  5. Step 5: Solve for x
    x = 3,814,716,367.52/71,129.35
  6. Step 6: Final answer
    x = 53,630.69

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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.