Home / 76,840.81-106,037.04-56,690.44

Finding the Fourth Proportional to 76,840.81, 106,037.04 and 56,690.44

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Solution

The fourth proportional to 76,840.81, 106,037.04 and 56,690.44 is: 78,230.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,840.81 : 106,037.04 = 56,690.44 : x
  2. Step 2: Convert to fraction form
    76,840.81/106,037.04 = 56,690.44/x
  3. Step 3: Cross multiply
    76,840.81x = 106,037.04 × 56,690.44
  4. Step 4: Simplify right side
    76,840.81x = 6,011,286,453.90
  5. Step 5: Solve for x
    x = 6,011,286,453.90/76,840.81
  6. Step 6: Final answer
    x = 78,230.39

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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.