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Finding the Fourth Proportional to 64,390.62, 96,585.47 and 20,017.30

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Solution

The fourth proportional to 64,390.62, 96,585.47 and 20,017.30 is: 30,025.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,390.62 : 96,585.47 = 20,017.30 : x
  2. Step 2: Convert to fraction form
    64,390.62/96,585.47 = 20,017.30/x
  3. Step 3: Cross multiply
    64,390.62x = 96,585.47 × 20,017.30
  4. Step 4: Simplify right side
    64,390.62x = 1,933,380,328.63
  5. Step 5: Solve for x
    x = 1,933,380,328.63/64,390.62
  6. Step 6: Final answer
    x = 30,025.81

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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.