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Finding the Fourth Proportional to 64,719.08, 97,078.54 and 20,349.71

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Solution

The fourth proportional to 64,719.08, 97,078.54 and 20,349.71 is: 30,524.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,719.08 : 97,078.54 = 20,349.71 : x
  2. Step 2: Convert to fraction form
    64,719.08/97,078.54 = 20,349.71/x
  3. Step 3: Cross multiply
    64,719.08x = 97,078.54 × 20,349.71
  4. Step 4: Simplify right side
    64,719.08x = 1,975,520,136.22
  5. Step 5: Solve for x
    x = 1,975,520,136.22/64,719.08
  6. Step 6: Final answer
    x = 30,524.54

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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.