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Finding the Fourth Proportional to 85,129.70, 117,477.59 and 46,892.88

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Solution

The fourth proportional to 85,129.70, 117,477.59 and 46,892.88 is: 64,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,129.70 : 117,477.59 = 46,892.88 : x
  2. Step 2: Convert to fraction form
    85,129.70/117,477.59 = 46,892.88/x
  3. Step 3: Cross multiply
    85,129.70x = 117,477.59 × 46,892.88
  4. Step 4: Simplify right side
    85,129.70x = 5,508,862,296.09
  5. Step 5: Solve for x
    x = 5,508,862,296.09/85,129.70
  6. Step 6: Final answer
    x = 64,711.41

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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.