Home / 86,054.36-118,772.10-54,989.74

Finding the Fourth Proportional to 86,054.36, 118,772.10 and 54,989.74

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Solution

The fourth proportional to 86,054.36, 118,772.10 and 54,989.74 is: 75,896.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,054.36 : 118,772.10 = 54,989.74 : x
  2. Step 2: Convert to fraction form
    86,054.36/118,772.10 = 54,989.74/x
  3. Step 3: Cross multiply
    86,054.36x = 118,772.10 × 54,989.74
  4. Step 4: Simplify right side
    86,054.36x = 6,531,246,898.25
  5. Step 5: Solve for x
    x = 6,531,246,898.25/86,054.36
  6. Step 6: Final answer
    x = 75,896.76

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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.