Home / 90,991.42-125,566.44-49,598.78

Finding the Fourth Proportional to 90,991.42, 125,566.44 and 49,598.78

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Solution

The fourth proportional to 90,991.42, 125,566.44 and 49,598.78 is: 68,445.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991.42 : 125,566.44 = 49,598.78 : x
  2. Step 2: Convert to fraction form
    90,991.42/125,566.44 = 49,598.78/x
  3. Step 3: Cross multiply
    90,991.42x = 125,566.44 × 49,598.78
  4. Step 4: Simplify right side
    90,991.42x = 6,227,941,605.11
  5. Step 5: Solve for x
    x = 6,227,941,605.11/90,991.42
  6. Step 6: Final answer
    x = 68,445.37

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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.