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Finding the Fourth Proportional to 74,510.60, 102,825.64 and 42,679.46

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Solution

The fourth proportional to 74,510.60, 102,825.64 and 42,679.46 is: 58,898.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,510.60 : 102,825.64 = 42,679.46 : x
  2. Step 2: Convert to fraction form
    74,510.60/102,825.64 = 42,679.46/x
  3. Step 3: Cross multiply
    74,510.60x = 102,825.64 × 42,679.46
  4. Step 4: Simplify right side
    74,510.60x = 4,388,542,789.35
  5. Step 5: Solve for x
    x = 4,388,542,789.35/74,510.60
  6. Step 6: Final answer
    x = 58,898.23

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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.