Home / 109,749.40-164,688.90-39,619.60

Finding the Fourth Proportional to 109,749.40, 164,688.90 and 39,619.60

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Solution

The fourth proportional to 109,749.40, 164,688.90 and 39,619.60 is: 59,452.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,749.40 : 164,688.90 = 39,619.60 : x
  2. Step 2: Convert to fraction form
    109,749.40/164,688.90 = 39,619.60/x
  3. Step 3: Cross multiply
    109,749.40x = 164,688.90 × 39,619.60
  4. Step 4: Simplify right side
    109,749.40x = 6,524,908,342.44
  5. Step 5: Solve for x
    x = 6,524,908,342.44/109,749.40
  6. Step 6: Final answer
    x = 59,452.79

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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.