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Finding the Fourth Proportional to 61,202.80, 91,804.20 and 60,619.60

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Solution

The fourth proportional to 61,202.80, 91,804.20 and 60,619.60 is: 90,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,202.80 : 91,804.20 = 60,619.60 : x
  2. Step 2: Convert to fraction form
    61,202.80/91,804.20 = 60,619.60/x
  3. Step 3: Cross multiply
    61,202.80x = 91,804.20 × 60,619.60
  4. Step 4: Simplify right side
    61,202.80x = 5,565,133,882.32
  5. Step 5: Solve for x
    x = 5,565,133,882.32/61,202.80
  6. Step 6: Final answer
    x = 90,929.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.