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Finding the Fourth Proportional to 76,207.88, 105,203.34 and 50,756.60

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Solution

The fourth proportional to 76,207.88, 105,203.34 and 50,756.60 is: 70,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,207.88 : 105,203.34 = 50,756.60 : x
  2. Step 2: Convert to fraction form
    76,207.88/105,203.34 = 50,756.60/x
  3. Step 3: Cross multiply
    76,207.88x = 105,203.34 × 50,756.60
  4. Step 4: Simplify right side
    76,207.88x = 5,339,763,847.04
  5. Step 5: Solve for x
    x = 5,339,763,847.04/76,207.88
  6. Step 6: Final answer
    x = 70,068.40

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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.