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Finding the Fourth Proportional to 80,902.98, 121,259.15 and 36,477.72

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Solution

The fourth proportional to 80,902.98, 121,259.15 and 36,477.72 is: 54,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,902.98 : 121,259.15 = 36,477.72 : x
  2. Step 2: Convert to fraction form
    80,902.98/121,259.15 = 36,477.72/x
  3. Step 3: Cross multiply
    80,902.98x = 121,259.15 × 36,477.72
  4. Step 4: Simplify right side
    80,902.98x = 4,423,257,138.75
  5. Step 5: Solve for x
    x = 4,423,257,138.75/80,902.98
  6. Step 6: Final answer
    x = 54,673.60

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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.