Home / 81,099.09-111,915.41-45,289.53

Finding the Fourth Proportional to 81,099.09, 111,915.41 and 45,289.53

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Solution

The fourth proportional to 81,099.09, 111,915.41 and 45,289.53 is: 62,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,099.09 : 111,915.41 = 45,289.53 : x
  2. Step 2: Convert to fraction form
    81,099.09/111,915.41 = 45,289.53/x
  3. Step 3: Cross multiply
    81,099.09x = 111,915.41 × 45,289.53
  4. Step 4: Simplify right side
    81,099.09x = 5,068,596,092.21
  5. Step 5: Solve for x
    x = 5,068,596,092.21/81,099.09
  6. Step 6: Final answer
    x = 62,498.80

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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.