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Finding the Fourth Proportional to 74,172.52, 102,366.66 and 42,346

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Solution

The fourth proportional to 74,172.52, 102,366.66 and 42,346 is: 58,442.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.52 : 102,366.66 = 42,346 : x
  2. Step 2: Convert to fraction form
    74,172.52/102,366.66 = 42,346/x
  3. Step 3: Cross multiply
    74,172.52x = 102,366.66 × 42,346
  4. Step 4: Simplify right side
    74,172.52x = 4,334,818,584.36
  5. Step 5: Solve for x
    x = 4,334,818,584.36/74,172.52
  6. Step 6: Final answer
    x = 58,442.38

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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.