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Finding the Fourth Proportional to 88,987.60, 122,790.74 and 53,170

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Solution

The fourth proportional to 88,987.60, 122,790.74 and 53,170 is: 73,367.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,987.60 : 122,790.74 = 53,170 : x
  2. Step 2: Convert to fraction form
    88,987.60/122,790.74 = 53,170/x
  3. Step 3: Cross multiply
    88,987.60x = 122,790.74 × 53,170
  4. Step 4: Simplify right side
    88,987.60x = 6,528,783,645.80
  5. Step 5: Solve for x
    x = 6,528,783,645.80/88,987.60
  6. Step 6: Final answer
    x = 73,367.34

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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.