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Finding the Fourth Proportional to 71,604.88, 98,816.29 and 39,339.91

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Solution

The fourth proportional to 71,604.88, 98,816.29 and 39,339.91 is: 54,289.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,604.88 : 98,816.29 = 39,339.91 : x
  2. Step 2: Convert to fraction form
    71,604.88/98,816.29 = 39,339.91/x
  3. Step 3: Cross multiply
    71,604.88x = 98,816.29 × 39,339.91
  4. Step 4: Simplify right side
    71,604.88x = 3,887,423,955.13
  5. Step 5: Solve for x
    x = 3,887,423,955.13/71,604.88
  6. Step 6: Final answer
    x = 54,289.93

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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.