Home / 76,487.78-114,692.28-34,331.72

Finding the Fourth Proportional to 76,487.78, 114,692.28 and 34,331.72

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Solution

The fourth proportional to 76,487.78, 114,692.28 and 34,331.72 is: 51,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,487.78 : 114,692.28 = 34,331.72 : x
  2. Step 2: Convert to fraction form
    76,487.78/114,692.28 = 34,331.72/x
  3. Step 3: Cross multiply
    76,487.78x = 114,692.28 × 34,331.72
  4. Step 4: Simplify right side
    76,487.78x = 3,937,583,243.12
  5. Step 5: Solve for x
    x = 3,937,583,243.12/76,487.78
  6. Step 6: Final answer
    x = 51,479.90

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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.