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Finding the Fourth Proportional to 74,652.54, 103,002.62 and 42,379.98

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Solution

The fourth proportional to 74,652.54, 103,002.62 and 42,379.98 is: 58,474.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,652.54 : 103,002.62 = 42,379.98 : x
  2. Step 2: Convert to fraction form
    74,652.54/103,002.62 = 42,379.98/x
  3. Step 3: Cross multiply
    74,652.54x = 103,002.62 × 42,379.98
  4. Step 4: Simplify right side
    74,652.54x = 4,365,248,763.65
  5. Step 5: Solve for x
    x = 4,365,248,763.65/74,652.54
  6. Step 6: Final answer
    x = 58,474.22

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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.