Home / 71,638.32-98,856.54-39,806.13

Finding the Fourth Proportional to 71,638.32, 98,856.54 and 39,806.13

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Solution

The fourth proportional to 71,638.32, 98,856.54 and 39,806.13 is: 54,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,638.32 : 98,856.54 = 39,806.13 : x
  2. Step 2: Convert to fraction form
    71,638.32/98,856.54 = 39,806.13/x
  3. Step 3: Cross multiply
    71,638.32x = 98,856.54 × 39,806.13
  4. Step 4: Simplify right side
    71,638.32x = 3,935,096,282.59
  5. Step 5: Solve for x
    x = 3,935,096,282.59/71,638.32
  6. Step 6: Final answer
    x = 54,930.05

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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.