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Finding the Fourth Proportional to 75,619.95, 113,421.27 and 20,220.27

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Solution

The fourth proportional to 75,619.95, 113,421.27 and 20,220.27 is: 30,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,619.95 : 113,421.27 = 20,220.27 : x
  2. Step 2: Convert to fraction form
    75,619.95/113,421.27 = 20,220.27/x
  3. Step 3: Cross multiply
    75,619.95x = 113,421.27 × 20,220.27
  4. Step 4: Simplify right side
    75,619.95x = 2,293,408,703.14
  5. Step 5: Solve for x
    x = 2,293,408,703.14/75,619.95
  6. Step 6: Final answer
    x = 30,328.09

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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.