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Finding the Fourth Proportional to 29,385.20, 44,077.80 and 17,721.20

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Solution

The fourth proportional to 29,385.20, 44,077.80 and 17,721.20 is: 26,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,385.20 : 44,077.80 = 17,721.20 : x
  2. Step 2: Convert to fraction form
    29,385.20/44,077.80 = 17,721.20/x
  3. Step 3: Cross multiply
    29,385.20x = 44,077.80 × 17,721.20
  4. Step 4: Simplify right side
    29,385.20x = 781,111,509.36
  5. Step 5: Solve for x
    x = 781,111,509.36/29,385.20
  6. Step 6: Final answer
    x = 26,581.80

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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.