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Finding the Fourth Proportional to 64,659.52, 96,990.90 and 17,912.26

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Solution

The fourth proportional to 64,659.52, 96,990.90 and 17,912.26 is: 26,868.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,659.52 : 96,990.90 = 17,912.26 : x
  2. Step 2: Convert to fraction form
    64,659.52/96,990.90 = 17,912.26/x
  3. Step 3: Cross multiply
    64,659.52x = 96,990.90 × 17,912.26
  4. Step 4: Simplify right side
    64,659.52x = 1,737,326,218.43
  5. Step 5: Solve for x
    x = 1,737,326,218.43/64,659.52
  6. Step 6: Final answer
    x = 26,868.84

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1.5x scale

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.