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Finding the Fourth Proportional to 50,968.80, 70,337.88 and 28,309.89

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Solution

The fourth proportional to 50,968.80, 70,337.88 and 28,309.89 is: 39,068.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,968.80 : 70,337.88 = 28,309.89 : x
  2. Step 2: Convert to fraction form
    50,968.80/70,337.88 = 28,309.89/x
  3. Step 3: Cross multiply
    50,968.80x = 70,337.88 × 28,309.89
  4. Step 4: Simplify right side
    50,968.80x = 1,991,257,645.63
  5. Step 5: Solve for x
    x = 1,991,257,645.63/50,968.80
  6. Step 6: Final answer
    x = 39,068.17

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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.