Home / 45,518.75-68,289.65-12,686.75

Finding the Fourth Proportional to 45,518.75, 68,289.65 and 12,686.75

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Solution

The fourth proportional to 45,518.75, 68,289.65 and 12,686.75 is: 19,033.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,518.75 : 68,289.65 = 12,686.75 : x
  2. Step 2: Convert to fraction form
    45,518.75/68,289.65 = 12,686.75/x
  3. Step 3: Cross multiply
    45,518.75x = 68,289.65 × 12,686.75
  4. Step 4: Simplify right side
    45,518.75x = 866,373,717.14
  5. Step 5: Solve for x
    x = 866,373,717.14/45,518.75
  6. Step 6: Final answer
    x = 19,033.34

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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.