Home / 81,806.28-122,709.36-26,402.28

Finding the Fourth Proportional to 81,806.28, 122,709.36 and 26,402.28

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Solution

The fourth proportional to 81,806.28, 122,709.36 and 26,402.28 is: 39,603.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,806.28 : 122,709.36 = 26,402.28 : x
  2. Step 2: Convert to fraction form
    81,806.28/122,709.36 = 26,402.28/x
  3. Step 3: Cross multiply
    81,806.28x = 122,709.36 × 26,402.28
  4. Step 4: Simplify right side
    81,806.28x = 3,239,806,881.34
  5. Step 5: Solve for x
    x = 3,239,806,881.34/81,806.28
  6. Step 6: Final answer
    x = 39,603.40

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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.