Home / 64,512.96-96,772.01-20,139.72

Finding the Fourth Proportional to 64,512.96, 96,772.01 and 20,139.72

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Solution

The fourth proportional to 64,512.96, 96,772.01 and 20,139.72 is: 30,210.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,512.96 : 96,772.01 = 20,139.72 : x
  2. Step 2: Convert to fraction form
    64,512.96/96,772.01 = 20,139.72/x
  3. Step 3: Cross multiply
    64,512.96x = 96,772.01 × 20,139.72
  4. Step 4: Simplify right side
    64,512.96x = 1,948,961,185.24
  5. Step 5: Solve for x
    x = 1,948,961,185.24/64,512.96
  6. Step 6: Final answer
    x = 30,210.38

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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.