Home / 81,488.13-122,273.75-39,404.27

Finding the Fourth Proportional to 81,488.13, 122,273.75 and 39,404.27

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Solution

The fourth proportional to 81,488.13, 122,273.75 and 39,404.27 is: 59,126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,488.13 : 122,273.75 = 39,404.27 : x
  2. Step 2: Convert to fraction form
    81,488.13/122,273.75 = 39,404.27/x
  3. Step 3: Cross multiply
    81,488.13x = 122,273.75 × 39,404.27
  4. Step 4: Simplify right side
    81,488.13x = 4,818,108,263.11
  5. Step 5: Solve for x
    x = 4,818,108,263.11/81,488.13
  6. Step 6: Final answer
    x = 59,126.51

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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.