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Finding the Fourth Proportional to 97,874.53, 146,809.78 and 31,314.66

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Solution

The fourth proportional to 97,874.53, 146,809.78 and 31,314.66 is: 46,971.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,874.53 : 146,809.78 = 31,314.66 : x
  2. Step 2: Convert to fraction form
    97,874.53/146,809.78 = 31,314.66/x
  3. Step 3: Cross multiply
    97,874.53x = 146,809.78 × 31,314.66
  4. Step 4: Simplify right side
    97,874.53x = 4,597,298,345.37
  5. Step 5: Solve for x
    x = 4,597,298,345.37/97,874.53
  6. Step 6: Final answer
    x = 46,971.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.