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Finding the Fourth Proportional to 45,079.84, 67,619.44 and 18,420.14

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Solution

The fourth proportional to 45,079.84, 67,619.44 and 18,420.14 is: 27,630.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,079.84 : 67,619.44 = 18,420.14 : x
  2. Step 2: Convert to fraction form
    45,079.84/67,619.44 = 18,420.14/x
  3. Step 3: Cross multiply
    45,079.84x = 67,619.44 × 18,420.14
  4. Step 4: Simplify right side
    45,079.84x = 1,245,559,743.60
  5. Step 5: Solve for x
    x = 1,245,559,743.60/45,079.84
  6. Step 6: Final answer
    x = 27,630.08

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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.