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Finding the Fourth Proportional to 98,450.78, 147,669.03 and 38,467.98

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Solution

The fourth proportional to 98,450.78, 147,669.03 and 38,467.98 is: 57,699.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,450.78 : 147,669.03 = 38,467.98 : x
  2. Step 2: Convert to fraction form
    98,450.78/147,669.03 = 38,467.98/x
  3. Step 3: Cross multiply
    98,450.78x = 147,669.03 × 38,467.98
  4. Step 4: Simplify right side
    98,450.78x = 5,680,529,292.66
  5. Step 5: Solve for x
    x = 5,680,529,292.66/98,450.78
  6. Step 6: Final answer
    x = 57,699.18

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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.