Home / 78,360.40-108,183.50-47,745.04

Finding the Fourth Proportional to 78,360.40, 108,183.50 and 47,745.04

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Solution

The fourth proportional to 78,360.40, 108,183.50 and 47,745.04 is: 65,916.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,360.40 : 108,183.50 = 47,745.04 : x
  2. Step 2: Convert to fraction form
    78,360.40/108,183.50 = 47,745.04/x
  3. Step 3: Cross multiply
    78,360.40x = 108,183.50 × 47,745.04
  4. Step 4: Simplify right side
    78,360.40x = 5,165,225,534.84
  5. Step 5: Solve for x
    x = 5,165,225,534.84/78,360.40
  6. Step 6: Final answer
    x = 65,916.27

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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.