Home / 69,090.40-103,635.60-47,985.85

Finding the Fourth Proportional to 69,090.40, 103,635.60 and 47,985.85

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Solution

The fourth proportional to 69,090.40, 103,635.60 and 47,985.85 is: 71,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,090.40 : 103,635.60 = 47,985.85 : x
  2. Step 2: Convert to fraction form
    69,090.40/103,635.60 = 47,985.85/x
  3. Step 3: Cross multiply
    69,090.40x = 103,635.60 × 47,985.85
  4. Step 4: Simplify right side
    69,090.40x = 4,973,042,356.26
  5. Step 5: Solve for x
    x = 4,973,042,356.26/69,090.40
  6. Step 6: Final answer
    x = 71,978.78

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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.