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Finding the Fourth Proportional to 172,283.81, 258,438.01 and 45,923.39

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Solution

The fourth proportional to 172,283.81, 258,438.01 and 45,923.39 is: 68,888.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,283.81 : 258,438.01 = 45,923.39 : x
  2. Step 2: Convert to fraction form
    172,283.81/258,438.01 = 45,923.39/x
  3. Step 3: Cross multiply
    172,283.81x = 258,438.01 × 45,923.39
  4. Step 4: Simplify right side
    172,283.81x = 11,868,349,172.30
  5. Step 5: Solve for x
    x = 11,868,349,172.30/172,283.81
  6. Step 6: Final answer
    x = 68,888.36

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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.