Home / 45,090.79-67,644.69-13,918.75

Finding the Fourth Proportional to 45,090.79, 67,644.69 and 13,918.75

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Solution

The fourth proportional to 45,090.79, 67,644.69 and 13,918.75 is: 20,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,090.79 : 67,644.69 = 13,918.75 : x
  2. Step 2: Convert to fraction form
    45,090.79/67,644.69 = 13,918.75/x
  3. Step 3: Cross multiply
    45,090.79x = 67,644.69 × 13,918.75
  4. Step 4: Simplify right side
    45,090.79x = 941,529,528.94
  5. Step 5: Solve for x
    x = 941,529,528.94/45,090.79
  6. Step 6: Final answer
    x = 20,880.75

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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.