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Finding the Fourth Proportional to 76,904.62, 106,128.42 and 43,370.62

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Solution

The fourth proportional to 76,904.62, 106,128.42 and 43,370.62 is: 59,851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,904.62 : 106,128.42 = 43,370.62 : x
  2. Step 2: Convert to fraction form
    76,904.62/106,128.42 = 43,370.62/x
  3. Step 3: Cross multiply
    76,904.62x = 106,128.42 × 43,370.62
  4. Step 4: Simplify right side
    76,904.62x = 4,602,855,375.02
  5. Step 5: Solve for x
    x = 4,602,855,375.02/76,904.62
  6. Step 6: Final answer
    x = 59,851.48

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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.