Home / 78,372.08-108,155.60-46,108.96

Finding the Fourth Proportional to 78,372.08, 108,155.60 and 46,108.96

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Solution

The fourth proportional to 78,372.08, 108,155.60 and 46,108.96 is: 63,631.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372.08 : 108,155.60 = 46,108.96 : x
  2. Step 2: Convert to fraction form
    78,372.08/108,155.60 = 46,108.96/x
  3. Step 3: Cross multiply
    78,372.08x = 108,155.60 × 46,108.96
  4. Step 4: Simplify right side
    78,372.08x = 4,986,942,234.18
  5. Step 5: Solve for x
    x = 4,986,942,234.18/78,372.08
  6. Step 6: Final answer
    x = 63,631.62

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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.