Home / 50,020.51-75,030.77-20,438.32

Finding the Fourth Proportional to 50,020.51, 75,030.77 and 20,438.32

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Solution

The fourth proportional to 50,020.51, 75,030.77 and 20,438.32 is: 30,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,020.51 : 75,030.77 = 20,438.32 : x
  2. Step 2: Convert to fraction form
    50,020.51/75,030.77 = 20,438.32/x
  3. Step 3: Cross multiply
    50,020.51x = 75,030.77 × 20,438.32
  4. Step 4: Simplify right side
    50,020.51x = 1,533,502,993.67
  5. Step 5: Solve for x
    x = 1,533,502,993.67/50,020.51
  6. Step 6: Final answer
    x = 30,657.48

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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.