Home / 40,899.60-61,352.47-21,181.74

Finding the Fourth Proportional to 40,899.60, 61,352.47 and 21,181.74

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Solution

The fourth proportional to 40,899.60, 61,352.47 and 21,181.74 is: 31,774.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,899.60 : 61,352.47 = 21,181.74 : x
  2. Step 2: Convert to fraction form
    40,899.60/61,352.47 = 21,181.74/x
  3. Step 3: Cross multiply
    40,899.60x = 61,352.47 × 21,181.74
  4. Step 4: Simplify right side
    40,899.60x = 1,299,551,864.30
  5. Step 5: Solve for x
    x = 1,299,551,864.30/40,899.60
  6. Step 6: Final answer
    x = 31,774.19

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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.