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Finding the Fourth Proportional to 76,904.40, 115,232.40 and 43,525.20

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Solution

The fourth proportional to 76,904.40, 115,232.40 and 43,525.20 is: 65,217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,904.40 : 115,232.40 = 43,525.20 : x
  2. Step 2: Convert to fraction form
    76,904.40/115,232.40 = 43,525.20/x
  3. Step 3: Cross multiply
    76,904.40x = 115,232.40 × 43,525.20
  4. Step 4: Simplify right side
    76,904.40x = 5,015,513,256.48
  5. Step 5: Solve for x
    x = 5,015,513,256.48/76,904.40
  6. Step 6: Final answer
    x = 65,217.51

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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.