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Finding the Fourth Proportional to 76,645.76, 114,790.26 and 73,985.48

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Solution

The fourth proportional to 76,645.76, 114,790.26 and 73,985.48 is: 110,806.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,645.76 : 114,790.26 = 73,985.48 : x
  2. Step 2: Convert to fraction form
    76,645.76/114,790.26 = 73,985.48/x
  3. Step 3: Cross multiply
    76,645.76x = 114,790.26 × 73,985.48
  4. Step 4: Simplify right side
    76,645.76x = 8,492,812,485.42
  5. Step 5: Solve for x
    x = 8,492,812,485.42/76,645.76
  6. Step 6: Final answer
    x = 110,806.03

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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.