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Finding the Fourth Proportional to 50,808.78, 70,109.55 and 28,452.78

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Solution

The fourth proportional to 50,808.78, 70,109.55 and 28,452.78 is: 39,261.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,808.78 : 70,109.55 = 28,452.78 : x
  2. Step 2: Convert to fraction form
    50,808.78/70,109.55 = 28,452.78/x
  3. Step 3: Cross multiply
    50,808.78x = 70,109.55 × 28,452.78
  4. Step 4: Simplify right side
    50,808.78x = 1,994,811,602.05
  5. Step 5: Solve for x
    x = 1,994,811,602.05/50,808.78
  6. Step 6: Final answer
    x = 39,261.16

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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.