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Finding the Fourth Proportional to 71,370.36, 98,491.20 and 39,541.28

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Solution

The fourth proportional to 71,370.36, 98,491.20 and 39,541.28 is: 54,567.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,370.36 : 98,491.20 = 39,541.28 : x
  2. Step 2: Convert to fraction form
    71,370.36/98,491.20 = 39,541.28/x
  3. Step 3: Cross multiply
    71,370.36x = 98,491.20 × 39,541.28
  4. Step 4: Simplify right side
    71,370.36x = 3,894,468,116.74
  5. Step 5: Solve for x
    x = 3,894,468,116.74/71,370.36
  6. Step 6: Final answer
    x = 54,567.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.