Home / 90,822.80-136,234.20-61,079.60

Finding the Fourth Proportional to 90,822.80, 136,234.20 and 61,079.60

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Solution

The fourth proportional to 90,822.80, 136,234.20 and 61,079.60 is: 91,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,822.80 : 136,234.20 = 61,079.60 : x
  2. Step 2: Convert to fraction form
    90,822.80/136,234.20 = 61,079.60/x
  3. Step 3: Cross multiply
    90,822.80x = 136,234.20 × 61,079.60
  4. Step 4: Simplify right side
    90,822.80x = 8,321,130,442.32
  5. Step 5: Solve for x
    x = 8,321,130,442.32/90,822.80
  6. Step 6: Final answer
    x = 91,619.40

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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.