Home / 42,090.85-63,143.88-12,103.66

Finding the Fourth Proportional to 42,090.85, 63,143.88 and 12,103.66

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Solution

The fourth proportional to 42,090.85, 63,143.88 and 12,103.66 is: 18,157.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,090.85 : 63,143.88 = 12,103.66 : x
  2. Step 2: Convert to fraction form
    42,090.85/63,143.88 = 12,103.66/x
  3. Step 3: Cross multiply
    42,090.85x = 63,143.88 × 12,103.66
  4. Step 4: Simplify right side
    42,090.85x = 764,272,054.60
  5. Step 5: Solve for x
    x = 764,272,054.60/42,090.85
  6. Step 6: Final answer
    x = 18,157.68

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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.