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Finding the Fourth Proportional to 80,374.88, 120,589.32 and 56,384.18

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Solution

The fourth proportional to 80,374.88, 120,589.32 and 56,384.18 is: 84,595.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,374.88 : 120,589.32 = 56,384.18 : x
  2. Step 2: Convert to fraction form
    80,374.88/120,589.32 = 56,384.18/x
  3. Step 3: Cross multiply
    80,374.88x = 120,589.32 × 56,384.18
  4. Step 4: Simplify right side
    80,374.88x = 6,799,330,663.98
  5. Step 5: Solve for x
    x = 6,799,330,663.98/80,374.88
  6. Step 6: Final answer
    x = 84,595.22

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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.