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Finding the Fourth Proportional to 64,773.90, 97,151.62 and 20,399.50

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Solution

The fourth proportional to 64,773.90, 97,151.62 and 20,399.50 is: 30,596.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,773.90 : 97,151.62 = 20,399.50 : x
  2. Step 2: Convert to fraction form
    64,773.90/97,151.62 = 20,399.50/x
  3. Step 3: Cross multiply
    64,773.90x = 97,151.62 × 20,399.50
  4. Step 4: Simplify right side
    64,773.90x = 1,981,844,199.71
  5. Step 5: Solve for x
    x = 1,981,844,199.71/64,773.90
  6. Step 6: Final answer
    x = 30,596.34

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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.