Home / 81,913.18-122,869.68-25,758.22

Finding the Fourth Proportional to 81,913.18, 122,869.68 and 25,758.22

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Solution

The fourth proportional to 81,913.18, 122,869.68 and 25,758.22 is: 38,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,913.18 : 122,869.68 = 25,758.22 : x
  2. Step 2: Convert to fraction form
    81,913.18/122,869.68 = 25,758.22/x
  3. Step 3: Cross multiply
    81,913.18x = 122,869.68 × 25,758.22
  4. Step 4: Simplify right side
    81,913.18x = 3,164,904,248.77
  5. Step 5: Solve for x
    x = 3,164,904,248.77/81,913.18
  6. Step 6: Final answer
    x = 38,637.30

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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.