Home / 78,927.87-108,900.95-50,671.83

Finding the Fourth Proportional to 78,927.87, 108,900.95 and 50,671.83

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Solution

The fourth proportional to 78,927.87, 108,900.95 and 50,671.83 is: 69,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,927.87 : 108,900.95 = 50,671.83 : x
  2. Step 2: Convert to fraction form
    78,927.87/108,900.95 = 50,671.83/x
  3. Step 3: Cross multiply
    78,927.87x = 108,900.95 × 50,671.83
  4. Step 4: Simplify right side
    78,927.87x = 5,518,210,171.88
  5. Step 5: Solve for x
    x = 5,518,210,171.88/78,927.87
  6. Step 6: Final answer
    x = 69,914.60

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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.