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Finding the Fourth Proportional to 74,525.40, 102,844.80 and 42,694.20

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Solution

The fourth proportional to 74,525.40, 102,844.80 and 42,694.20 is: 58,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,525.40 : 102,844.80 = 42,694.20 : x
  2. Step 2: Convert to fraction form
    74,525.40/102,844.80 = 42,694.20/x
  3. Step 3: Cross multiply
    74,525.40x = 102,844.80 × 42,694.20
  4. Step 4: Simplify right side
    74,525.40x = 4,390,876,460.16
  5. Step 5: Solve for x
    x = 4,390,876,460.16/74,525.40
  6. Step 6: Final answer
    x = 58,917.85

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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.