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Finding the Fourth Proportional to 101,790.29, 152,668.41 and 31,664.13

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Solution

The fourth proportional to 101,790.29, 152,668.41 and 31,664.13 is: 47,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,790.29 : 152,668.41 = 31,664.13 : x
  2. Step 2: Convert to fraction form
    101,790.29/152,668.41 = 31,664.13/x
  3. Step 3: Cross multiply
    101,790.29x = 152,668.41 × 31,664.13
  4. Step 4: Simplify right side
    101,790.29x = 4,834,112,381.13
  5. Step 5: Solve for x
    x = 4,834,112,381.13/101,790.29
  6. Step 6: Final answer
    x = 47,490.90

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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.