Home / 64,640.89-96,961.34-20,271.52

Finding the Fourth Proportional to 64,640.89, 96,961.34 and 20,271.52

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Solution

The fourth proportional to 64,640.89, 96,961.34 and 20,271.52 is: 30,407.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,640.89 : 96,961.34 = 20,271.52 : x
  2. Step 2: Convert to fraction form
    64,640.89/96,961.34 = 20,271.52/x
  3. Step 3: Cross multiply
    64,640.89x = 96,961.34 × 20,271.52
  4. Step 4: Simplify right side
    64,640.89x = 1,965,553,156.87
  5. Step 5: Solve for x
    x = 1,965,553,156.87/64,640.89
  6. Step 6: Final answer
    x = 30,407.27

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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.