Home / 57,742.20-86,699.70-40,289.40

Finding the Fourth Proportional to 57,742.20, 86,699.70 and 40,289.40

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Solution

The fourth proportional to 57,742.20, 86,699.70 and 40,289.40 is: 60,494.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,742.20 : 86,699.70 = 40,289.40 : x
  2. Step 2: Convert to fraction form
    57,742.20/86,699.70 = 40,289.40/x
  3. Step 3: Cross multiply
    57,742.20x = 86,699.70 × 40,289.40
  4. Step 4: Simplify right side
    57,742.20x = 3,493,078,893.18
  5. Step 5: Solve for x
    x = 3,493,078,893.18/57,742.20
  6. Step 6: Final answer
    x = 60,494.39

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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.