Home / 71,749.80-99,010.08-39,917.88

Finding the Fourth Proportional to 71,749.80, 99,010.08 and 39,917.88

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Solution

The fourth proportional to 71,749.80, 99,010.08 and 39,917.88 is: 55,084.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,749.80 : 99,010.08 = 39,917.88 : x
  2. Step 2: Convert to fraction form
    71,749.80/99,010.08 = 39,917.88/x
  3. Step 3: Cross multiply
    71,749.80x = 99,010.08 × 39,917.88
  4. Step 4: Simplify right side
    71,749.80x = 3,952,272,492.23
  5. Step 5: Solve for x
    x = 3,952,272,492.23/71,749.80
  6. Step 6: Final answer
    x = 55,084.09

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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.