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Finding the Fourth Proportional to 77,773.67, 116,660.58 and 21,613.79

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Solution

The fourth proportional to 77,773.67, 116,660.58 and 21,613.79 is: 32,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,773.67 : 116,660.58 = 21,613.79 : x
  2. Step 2: Convert to fraction form
    77,773.67/116,660.58 = 21,613.79/x
  3. Step 3: Cross multiply
    77,773.67x = 116,660.58 × 21,613.79
  4. Step 4: Simplify right side
    77,773.67x = 2,521,476,892.57
  5. Step 5: Solve for x
    x = 2,521,476,892.57/77,773.67
  6. Step 6: Final answer
    x = 32,420.70

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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.