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Finding the Fourth Proportional to 50,749.60, 70,911.20 and 50,749.60

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Solution

The fourth proportional to 50,749.60, 70,911.20 and 50,749.60 is: 70,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,749.60 : 70,911.20 = 50,749.60 : x
  2. Step 2: Convert to fraction form
    50,749.60/70,911.20 = 50,749.60/x
  3. Step 3: Cross multiply
    50,749.60x = 70,911.20 × 50,749.60
  4. Step 4: Simplify right side
    50,749.60x = 3,598,715,035.52
  5. Step 5: Solve for x
    x = 3,598,715,035.52/50,749.60
  6. Step 6: Final answer
    x = 70,911.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.