Home / 109,621.40-164,432.10-39,491.60

Finding the Fourth Proportional to 109,621.40, 164,432.10 and 39,491.60

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Solution

The fourth proportional to 109,621.40, 164,432.10 and 39,491.60 is: 59,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,621.40 : 164,432.10 = 39,491.60 : x
  2. Step 2: Convert to fraction form
    109,621.40/164,432.10 = 39,491.60/x
  3. Step 3: Cross multiply
    109,621.40x = 164,432.10 × 39,491.60
  4. Step 4: Simplify right side
    109,621.40x = 6,493,686,720.36
  5. Step 5: Solve for x
    x = 6,493,686,720.36/109,621.40
  6. Step 6: Final answer
    x = 59,237.40

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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.