Home / 74,418.18-102,697.88-40,427.06

Finding the Fourth Proportional to 74,418.18, 102,697.88 and 40,427.06

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Solution

The fourth proportional to 74,418.18, 102,697.88 and 40,427.06 is: 55,789.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,418.18 : 102,697.88 = 40,427.06 : x
  2. Step 2: Convert to fraction form
    74,418.18/102,697.88 = 40,427.06/x
  3. Step 3: Cross multiply
    74,418.18x = 102,697.88 × 40,427.06
  4. Step 4: Simplify right side
    74,418.18x = 4,151,773,356.63
  5. Step 5: Solve for x
    x = 4,151,773,356.63/74,418.18
  6. Step 6: Final answer
    x = 55,789.77

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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.