Home / 71,749.70-99,011.87-39,917.91

Finding the Fourth Proportional to 71,749.70, 99,011.87 and 39,917.91

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Solution

The fourth proportional to 71,749.70, 99,011.87 and 39,917.91 is: 55,085.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,749.70 : 99,011.87 = 39,917.91 : x
  2. Step 2: Convert to fraction form
    71,749.70/99,011.87 = 39,917.91/x
  3. Step 3: Cross multiply
    71,749.70x = 99,011.87 × 39,917.91
  4. Step 4: Simplify right side
    71,749.70x = 3,952,347,236.99
  5. Step 5: Solve for x
    x = 3,952,347,236.99/71,749.70
  6. Step 6: Final answer
    x = 55,085.21

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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.