Home / 80,833.40-111,563.28-61,676.90

Finding the Fourth Proportional to 80,833.40, 111,563.28 and 61,676.90

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Solution

The fourth proportional to 80,833.40, 111,563.28 and 61,676.90 is: 85,124.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,833.40 : 111,563.28 = 61,676.90 : x
  2. Step 2: Convert to fraction form
    80,833.40/111,563.28 = 61,676.90/x
  3. Step 3: Cross multiply
    80,833.40x = 111,563.28 × 61,676.90
  4. Step 4: Simplify right side
    80,833.40x = 6,880,877,264.23
  5. Step 5: Solve for x
    x = 6,880,877,264.23/80,833.40
  6. Step 6: Final answer
    x = 85,124.18

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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.