Home / 69,090.90-103,636.35-47,986.35

Finding the Fourth Proportional to 69,090.90, 103,636.35 and 47,986.35

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Solution

The fourth proportional to 69,090.90, 103,636.35 and 47,986.35 is: 71,979.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,090.90 : 103,636.35 = 47,986.35 : x
  2. Step 2: Convert to fraction form
    69,090.90/103,636.35 = 47,986.35/x
  3. Step 3: Cross multiply
    69,090.90x = 103,636.35 × 47,986.35
  4. Step 4: Simplify right side
    69,090.90x = 4,973,130,163.82
  5. Step 5: Solve for x
    x = 4,973,130,163.82/69,090.90
  6. Step 6: Final answer
    x = 71,979.53

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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.