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Finding the Fourth Proportional to 64,405.40, 96,608.10 and 17,658.20

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Solution

The fourth proportional to 64,405.40, 96,608.10 and 17,658.20 is: 26,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,405.40 : 96,608.10 = 17,658.20 : x
  2. Step 2: Convert to fraction form
    64,405.40/96,608.10 = 17,658.20/x
  3. Step 3: Cross multiply
    64,405.40x = 96,608.10 × 17,658.20
  4. Step 4: Simplify right side
    64,405.40x = 1,705,925,151.42
  5. Step 5: Solve for x
    x = 1,705,925,151.42/64,405.40
  6. Step 6: Final answer
    x = 26,487.30

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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.