Home / 81,277.41-111,913.59-71,149.17

Finding the Fourth Proportional to 81,277.41, 111,913.59 and 71,149.17

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Solution

The fourth proportional to 81,277.41, 111,913.59 and 71,149.17 is: 97,967.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,277.41 : 111,913.59 = 71,149.17 : x
  2. Step 2: Convert to fraction form
    81,277.41/111,913.59 = 71,149.17/x
  3. Step 3: Cross multiply
    81,277.41x = 111,913.59 × 71,149.17
  4. Step 4: Simplify right side
    81,277.41x = 7,962,559,040.22
  5. Step 5: Solve for x
    x = 7,962,559,040.22/81,277.41
  6. Step 6: Final answer
    x = 97,967.68

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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.