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Finding the Fourth Proportional to 57,968.80, 86,758.80 and 50,970.40

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Solution

The fourth proportional to 57,968.80, 86,758.80 and 50,970.40 is: 76,284.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,968.80 : 86,758.80 = 50,970.40 : x
  2. Step 2: Convert to fraction form
    57,968.80/86,758.80 = 50,970.40/x
  3. Step 3: Cross multiply
    57,968.80x = 86,758.80 × 50,970.40
  4. Step 4: Simplify right side
    57,968.80x = 4,422,130,739.52
  5. Step 5: Solve for x
    x = 4,422,130,739.52/57,968.80
  6. Step 6: Final answer
    x = 76,284.67

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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.