Home / 45,438.75-68,159.04-12,158.76

Finding the Fourth Proportional to 45,438.75, 68,159.04 and 12,158.76

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Solution

The fourth proportional to 45,438.75, 68,159.04 and 12,158.76 is: 18,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,438.75 : 68,159.04 = 12,158.76 : x
  2. Step 2: Convert to fraction form
    45,438.75/68,159.04 = 12,158.76/x
  3. Step 3: Cross multiply
    45,438.75x = 68,159.04 × 12,158.76
  4. Step 4: Simplify right side
    45,438.75x = 828,729,664.79
  5. Step 5: Solve for x
    x = 828,729,664.79/45,438.75
  6. Step 6: Final answer
    x = 18,238.39

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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.