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Finding the Fourth Proportional to 45,090.40, 67,618.48 and 18,064.48

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Solution

The fourth proportional to 45,090.40, 67,618.48 and 18,064.48 is: 27,089.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,090.40 : 67,618.48 = 18,064.48 : x
  2. Step 2: Convert to fraction form
    45,090.40/67,618.48 = 18,064.48/x
  3. Step 3: Cross multiply
    45,090.40x = 67,618.48 × 18,064.48
  4. Step 4: Simplify right side
    45,090.40x = 1,221,492,679.59
  5. Step 5: Solve for x
    x = 1,221,492,679.59/45,090.40
  6. Step 6: Final answer
    x = 27,089.86

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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.