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Finding the Fourth Proportional to 60,808.40, 91,212.60 and 51,185.60

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Solution

The fourth proportional to 60,808.40, 91,212.60 and 51,185.60 is: 76,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,808.40 : 91,212.60 = 51,185.60 : x
  2. Step 2: Convert to fraction form
    60,808.40/91,212.60 = 51,185.60/x
  3. Step 3: Cross multiply
    60,808.40x = 91,212.60 × 51,185.60
  4. Step 4: Simplify right side
    60,808.40x = 4,668,771,658.56
  5. Step 5: Solve for x
    x = 4,668,771,658.56/60,808.40
  6. Step 6: Final answer
    x = 76,778.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.