Home / 50,790.36-70,090.88-28,128.84

Finding the Fourth Proportional to 50,790.36, 70,090.88 and 28,128.84

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Solution

The fourth proportional to 50,790.36, 70,090.88 and 28,128.84 is: 38,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,790.36 : 70,090.88 = 28,128.84 : x
  2. Step 2: Convert to fraction form
    50,790.36/70,090.88 = 28,128.84/x
  3. Step 3: Cross multiply
    50,790.36x = 70,090.88 × 28,128.84
  4. Step 4: Simplify right side
    50,790.36x = 1,971,575,148.98
  5. Step 5: Solve for x
    x = 1,971,575,148.98/50,790.36
  6. Step 6: Final answer
    x = 38,817.90

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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.