Home / 81,110.68-111,913.59-49,277.68

Finding the Fourth Proportional to 81,110.68, 111,913.59 and 49,277.68

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Solution

The fourth proportional to 81,110.68, 111,913.59 and 49,277.68 is: 67,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,110.68 : 111,913.59 = 49,277.68 : x
  2. Step 2: Convert to fraction form
    81,110.68/111,913.59 = 49,277.68/x
  3. Step 3: Cross multiply
    81,110.68x = 111,913.59 × 49,277.68
  4. Step 4: Simplify right side
    81,110.68x = 5,514,842,075.67
  5. Step 5: Solve for x
    x = 5,514,842,075.67/81,110.68
  6. Step 6: Final answer
    x = 67,991.57

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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.