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Finding the Fourth Proportional to 85,299, 117,712.62 and 47,573.28

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Solution

The fourth proportional to 85,299, 117,712.62 and 47,573.28 is: 65,651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,299 : 117,712.62 = 47,573.28 : x
  2. Step 2: Convert to fraction form
    85,299/117,712.62 = 47,573.28/x
  3. Step 3: Cross multiply
    85,299x = 117,712.62 × 47,573.28
  4. Step 4: Simplify right side
    85,299x = 5,599,975,430.79
  5. Step 5: Solve for x
    x = 5,599,975,430.79/85,299
  6. Step 6: Final answer
    x = 65,651.13

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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.