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Finding the Fourth Proportional to 50,800.68, 70,101.85 and 28,138.35

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Solution

The fourth proportional to 50,800.68, 70,101.85 and 28,138.35 is: 38,829.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,800.68 : 70,101.85 = 28,138.35 : x
  2. Step 2: Convert to fraction form
    50,800.68/70,101.85 = 28,138.35/x
  3. Step 3: Cross multiply
    50,800.68x = 70,101.85 × 28,138.35
  4. Step 4: Simplify right side
    50,800.68x = 1,972,549,965.62
  5. Step 5: Solve for x
    x = 1,972,549,965.62/50,800.68
  6. Step 6: Final answer
    x = 38,829.21

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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.