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Finding the Fourth Proportional to 80,594.96, 120,892.28 and 21,430.62

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Solution

The fourth proportional to 80,594.96, 120,892.28 and 21,430.62 is: 32,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,594.96 : 120,892.28 = 21,430.62 : x
  2. Step 2: Convert to fraction form
    80,594.96/120,892.28 = 21,430.62/x
  3. Step 3: Cross multiply
    80,594.96x = 120,892.28 × 21,430.62
  4. Step 4: Simplify right side
    80,594.96x = 2,590,796,513.61
  5. Step 5: Solve for x
    x = 2,590,796,513.61/80,594.96
  6. Step 6: Final answer
    x = 32,145.89

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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.