Home / 71,135.34-98,165.79-39,303.78

Finding the Fourth Proportional to 71,135.34, 98,165.79 and 39,303.78

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Solution

The fourth proportional to 71,135.34, 98,165.79 and 39,303.78 is: 54,238.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,135.34 : 98,165.79 = 39,303.78 : x
  2. Step 2: Convert to fraction form
    71,135.34/98,165.79 = 39,303.78/x
  3. Step 3: Cross multiply
    71,135.34x = 98,165.79 × 39,303.78
  4. Step 4: Simplify right side
    71,135.34x = 3,858,286,613.69
  5. Step 5: Solve for x
    x = 3,858,286,613.69/71,135.34
  6. Step 6: Final answer
    x = 54,238.68

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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.