Home / 66,308.40-99,376.20-30,765.60

Finding the Fourth Proportional to 66,308.40, 99,376.20 and 30,765.60

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Solution

The fourth proportional to 66,308.40, 99,376.20 and 30,765.60 is: 46,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,308.40 : 99,376.20 = 30,765.60 : x
  2. Step 2: Convert to fraction form
    66,308.40/99,376.20 = 30,765.60/x
  3. Step 3: Cross multiply
    66,308.40x = 99,376.20 × 30,765.60
  4. Step 4: Simplify right side
    66,308.40x = 3,057,368,418.72
  5. Step 5: Solve for x
    x = 3,057,368,418.72/66,308.40
  6. Step 6: Final answer
    x = 46,108.31

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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.