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Finding the Fourth Proportional to 64,767.91, 97,155.33 and 20,398.12

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Solution

The fourth proportional to 64,767.91, 97,155.33 and 20,398.12 is: 30,598.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,767.91 : 97,155.33 = 20,398.12 : x
  2. Step 2: Convert to fraction form
    64,767.91/97,155.33 = 20,398.12/x
  3. Step 3: Cross multiply
    64,767.91x = 97,155.33 × 20,398.12
  4. Step 4: Simplify right side
    64,767.91x = 1,981,786,079.98
  5. Step 5: Solve for x
    x = 1,981,786,079.98/64,767.91
  6. Step 6: Final answer
    x = 30,598.27

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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.