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Finding the Fourth Proportional to 50,988.74, 70,375.70 and 28,335.50

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Solution

The fourth proportional to 50,988.74, 70,375.70 and 28,335.50 is: 39,109.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,988.74 : 70,375.70 = 28,335.50 : x
  2. Step 2: Convert to fraction form
    50,988.74/70,375.70 = 28,335.50/x
  3. Step 3: Cross multiply
    50,988.74x = 70,375.70 × 28,335.50
  4. Step 4: Simplify right side
    50,988.74x = 1,994,130,647.35
  5. Step 5: Solve for x
    x = 1,994,130,647.35/50,988.74
  6. Step 6: Final answer
    x = 39,109.24

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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.