Home / 50,003.72-75,005.63-20,421.55

Finding the Fourth Proportional to 50,003.72, 75,005.63 and 20,421.55

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Solution

The fourth proportional to 50,003.72, 75,005.63 and 20,421.55 is: 30,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,003.72 : 75,005.63 = 20,421.55 : x
  2. Step 2: Convert to fraction form
    50,003.72/75,005.63 = 20,421.55/x
  3. Step 3: Cross multiply
    50,003.72x = 75,005.63 × 20,421.55
  4. Step 4: Simplify right side
    50,003.72x = 1,531,731,223.33
  5. Step 5: Solve for x
    x = 1,531,731,223.33/50,003.72
  6. Step 6: Final answer
    x = 30,632.35

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Double scale
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Similar ratio
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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.