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Finding the Fourth Proportional to 50,884.61, 70,212.32 and 28,220.00

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Solution

The fourth proportional to 50,884.61, 70,212.32 and 28,220.00 is: 38,938.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,884.61 : 70,212.32 = 28,220.00 : x
  2. Step 2: Convert to fraction form
    50,884.61/70,212.32 = 28,220.00/x
  3. Step 3: Cross multiply
    50,884.61x = 70,212.32 × 28,220.00
  4. Step 4: Simplify right side
    50,884.61x = 1,981,391,284.06
  5. Step 5: Solve for x
    x = 1,981,391,284.06/50,884.61
  6. Step 6: Final answer
    x = 38,938.91

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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.