Home / 71,439.29-107,145.27-35,890.74

Finding the Fourth Proportional to 71,439.29, 107,145.27 and 35,890.74

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Solution

The fourth proportional to 71,439.29, 107,145.27 and 35,890.74 is: 53,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,439.29 : 107,145.27 = 35,890.74 : x
  2. Step 2: Convert to fraction form
    71,439.29/107,145.27 = 35,890.74/x
  3. Step 3: Cross multiply
    71,439.29x = 107,145.27 × 35,890.74
  4. Step 4: Simplify right side
    71,439.29x = 3,845,523,027.80
  5. Step 5: Solve for x
    x = 3,845,523,027.80/71,439.29
  6. Step 6: Final answer
    x = 53,829.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.