Home / 85,311.20-127,782.12-61,886

Finding the Fourth Proportional to 85,311.20, 127,782.12 and 61,886

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Solution

The fourth proportional to 85,311.20, 127,782.12 and 61,886 is: 92,695.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,311.20 : 127,782.12 = 61,886 : x
  2. Step 2: Convert to fraction form
    85,311.20/127,782.12 = 61,886/x
  3. Step 3: Cross multiply
    85,311.20x = 127,782.12 × 61,886
  4. Step 4: Simplify right side
    85,311.20x = 7,907,924,278.32
  5. Step 5: Solve for x
    x = 7,907,924,278.32/85,311.20
  6. Step 6: Final answer
    x = 92,695.03

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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.