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Finding the Fourth Proportional to 171,722.31, 257,554.31 and 45,363.93

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Solution

The fourth proportional to 171,722.31, 257,554.31 and 45,363.93 is: 68,038.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,722.31 : 257,554.31 = 45,363.93 : x
  2. Step 2: Convert to fraction form
    171,722.31/257,554.31 = 45,363.93/x
  3. Step 3: Cross multiply
    171,722.31x = 257,554.31 × 45,363.93
  4. Step 4: Simplify right side
    171,722.31x = 11,683,675,463.22
  5. Step 5: Solve for x
    x = 11,683,675,463.22/171,722.31
  6. Step 6: Final answer
    x = 68,038.19

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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.