Home / 45,090.64-67,615.44-18,779.68

Finding the Fourth Proportional to 45,090.64, 67,615.44 and 18,779.68

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Solution

The fourth proportional to 45,090.64, 67,615.44 and 18,779.68 is: 28,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,090.64 : 67,615.44 = 18,779.68 : x
  2. Step 2: Convert to fraction form
    45,090.64/67,615.44 = 18,779.68/x
  3. Step 3: Cross multiply
    45,090.64x = 67,615.44 × 18,779.68
  4. Step 4: Simplify right side
    45,090.64x = 1,269,796,326.26
  5. Step 5: Solve for x
    x = 1,269,796,326.26/45,090.64
  6. Step 6: Final answer
    x = 28,160.97

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1.5x scale

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.