Home / 85,813.10-128,708.33-22,638.16

Finding the Fourth Proportional to 85,813.10, 128,708.33 and 22,638.16

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Solution

The fourth proportional to 85,813.10, 128,708.33 and 22,638.16 is: 33,954.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,813.10 : 128,708.33 = 22,638.16 : x
  2. Step 2: Convert to fraction form
    85,813.10/128,708.33 = 22,638.16/x
  3. Step 3: Cross multiply
    85,813.10x = 128,708.33 × 22,638.16
  4. Step 4: Simplify right side
    85,813.10x = 2,913,719,767.87
  5. Step 5: Solve for x
    x = 2,913,719,767.87/85,813.10
  6. Step 6: Final answer
    x = 33,954.25

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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.