Home / 40,221.40-55,559.64-30,906.40

Finding the Fourth Proportional to 40,221.40, 55,559.64 and 30,906.40

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Solution

The fourth proportional to 40,221.40, 55,559.64 and 30,906.40 is: 42,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,221.40 : 55,559.64 = 30,906.40 : x
  2. Step 2: Convert to fraction form
    40,221.40/55,559.64 = 30,906.40/x
  3. Step 3: Cross multiply
    40,221.40x = 55,559.64 × 30,906.40
  4. Step 4: Simplify right side
    40,221.40x = 1,717,148,457.70
  5. Step 5: Solve for x
    x = 1,717,148,457.70/40,221.40
  6. Step 6: Final answer
    x = 42,692.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.