Home / 88,678.13-122,375.88-66,036.60

Finding the Fourth Proportional to 88,678.13, 122,375.88 and 66,036.60

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Solution

The fourth proportional to 88,678.13, 122,375.88 and 66,036.60 is: 91,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,678.13 : 122,375.88 = 66,036.60 : x
  2. Step 2: Convert to fraction form
    88,678.13/122,375.88 = 66,036.60/x
  3. Step 3: Cross multiply
    88,678.13x = 122,375.88 × 66,036.60
  4. Step 4: Simplify right side
    88,678.13x = 8,081,287,037.21
  5. Step 5: Solve for x
    x = 8,081,287,037.21/88,678.13
  6. Step 6: Final answer
    x = 91,130.56

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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.