Home / 77,170.37-115,439.76-58,310.21

Finding the Fourth Proportional to 77,170.37, 115,439.76 and 58,310.21

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Solution

The fourth proportional to 77,170.37, 115,439.76 and 58,310.21 is: 87,226.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,170.37 : 115,439.76 = 58,310.21 : x
  2. Step 2: Convert to fraction form
    77,170.37/115,439.76 = 58,310.21/x
  3. Step 3: Cross multiply
    77,170.37x = 115,439.76 × 58,310.21
  4. Step 4: Simplify right side
    77,170.37x = 6,731,316,070.75
  5. Step 5: Solve for x
    x = 6,731,316,070.75/77,170.37
  6. Step 6: Final answer
    x = 87,226.70

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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.