Home / 85,129.89-117,480.05-46,889.58

Finding the Fourth Proportional to 85,129.89, 117,480.05 and 46,889.58

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Solution

The fourth proportional to 85,129.89, 117,480.05 and 46,889.58 is: 64,708.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,129.89 : 117,480.05 = 46,889.58 : x
  2. Step 2: Convert to fraction form
    85,129.89/117,480.05 = 46,889.58/x
  3. Step 3: Cross multiply
    85,129.89x = 117,480.05 × 46,889.58
  4. Step 4: Simplify right side
    85,129.89x = 5,508,590,320.10
  5. Step 5: Solve for x
    x = 5,508,590,320.10/85,129.89
  6. Step 6: Final answer
    x = 64,708.06

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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.