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Finding the Fourth Proportional to 85,063.68, 117,326.88 and 62,409.60

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Solution

The fourth proportional to 85,063.68, 117,326.88 and 62,409.60 is: 86,080.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,063.68 : 117,326.88 = 62,409.60 : x
  2. Step 2: Convert to fraction form
    85,063.68/117,326.88 = 62,409.60/x
  3. Step 3: Cross multiply
    85,063.68x = 117,326.88 × 62,409.60
  4. Step 4: Simplify right side
    85,063.68x = 7,322,323,650.05
  5. Step 5: Solve for x
    x = 7,322,323,650.05/85,063.68
  6. Step 6: Final answer
    x = 86,080.49

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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.