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Finding the Fourth Proportional to 87,662.59, 120,974.93 and 47,376.26

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Solution

The fourth proportional to 87,662.59, 120,974.93 and 47,376.26 is: 65,379.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,662.59 : 120,974.93 = 47,376.26 : x
  2. Step 2: Convert to fraction form
    87,662.59/120,974.93 = 47,376.26/x
  3. Step 3: Cross multiply
    87,662.59x = 120,974.93 × 47,376.26
  4. Step 4: Simplify right side
    87,662.59x = 5,731,339,465.76
  5. Step 5: Solve for x
    x = 5,731,339,465.76/87,662.59
  6. Step 6: Final answer
    x = 65,379.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.