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Finding the Fourth Proportional to 80,256.96, 120,398.40 and 24,840

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Solution

The fourth proportional to 80,256.96, 120,398.40 and 24,840 is: 37,264.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256.96 : 120,398.40 = 24,840 : x
  2. Step 2: Convert to fraction form
    80,256.96/120,398.40 = 24,840/x
  3. Step 3: Cross multiply
    80,256.96x = 120,398.40 × 24,840
  4. Step 4: Simplify right side
    80,256.96x = 2,990,696,256
  5. Step 5: Solve for x
    x = 2,990,696,256/80,256.96
  6. Step 6: Final answer
    x = 37,264.01

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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.