Home / 76,901.10-115,310.52-39,445.86

Finding the Fourth Proportional to 76,901.10, 115,310.52 and 39,445.86

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Solution

The fourth proportional to 76,901.10, 115,310.52 and 39,445.86 is: 59,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,901.10 : 115,310.52 = 39,445.86 : x
  2. Step 2: Convert to fraction form
    76,901.10/115,310.52 = 39,445.86/x
  3. Step 3: Cross multiply
    76,901.10x = 115,310.52 × 39,445.86
  4. Step 4: Simplify right side
    76,901.10x = 4,548,522,628.45
  5. Step 5: Solve for x
    x = 4,548,522,628.45/76,901.10
  6. Step 6: Final answer
    x = 59,147.69

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1.5x scale

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.