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Finding the Fourth Proportional to 84,405.50, 116,495.16 and 54,228.54

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Solution

The fourth proportional to 84,405.50, 116,495.16 and 54,228.54 is: 74,845.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,405.50 : 116,495.16 = 54,228.54 : x
  2. Step 2: Convert to fraction form
    84,405.50/116,495.16 = 54,228.54/x
  3. Step 3: Cross multiply
    84,405.50x = 116,495.16 × 54,228.54
  4. Step 4: Simplify right side
    84,405.50x = 6,317,362,443.87
  5. Step 5: Solve for x
    x = 6,317,362,443.87/84,405.50
  6. Step 6: Final answer
    x = 74,845.39

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1.5x scale

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.