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Finding the Fourth Proportional to 45,980.62, 68,970.83 and 12,700.60

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Solution

The fourth proportional to 45,980.62, 68,970.83 and 12,700.60 is: 19,050.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,980.62 : 68,970.83 = 12,700.60 : x
  2. Step 2: Convert to fraction form
    45,980.62/68,970.83 = 12,700.60/x
  3. Step 3: Cross multiply
    45,980.62x = 68,970.83 × 12,700.60
  4. Step 4: Simplify right side
    45,980.62x = 875,970,687.57
  5. Step 5: Solve for x
    x = 875,970,687.57/45,980.62
  6. Step 6: Final answer
    x = 19,050.87

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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.