Home / 71,705.20-98,950.68-39,873.40

Finding the Fourth Proportional to 71,705.20, 98,950.68 and 39,873.40

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Solution

The fourth proportional to 71,705.20, 98,950.68 and 39,873.40 is: 55,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,705.20 : 98,950.68 = 39,873.40 : x
  2. Step 2: Convert to fraction form
    71,705.20/98,950.68 = 39,873.40/x
  3. Step 3: Cross multiply
    71,705.20x = 98,950.68 × 39,873.40
  4. Step 4: Simplify right side
    71,705.20x = 3,945,500,043.91
  5. Step 5: Solve for x
    x = 3,945,500,043.91/71,705.20
  6. Step 6: Final answer
    x = 55,023.90

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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.