Home / 45,885.65-68,828.40-12,605.85

Finding the Fourth Proportional to 45,885.65, 68,828.40 and 12,605.85

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Solution

The fourth proportional to 45,885.65, 68,828.40 and 12,605.85 is: 18,908.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,885.65 : 68,828.40 = 12,605.85 : x
  2. Step 2: Convert to fraction form
    45,885.65/68,828.40 = 12,605.85/x
  3. Step 3: Cross multiply
    45,885.65x = 68,828.40 × 12,605.85
  4. Step 4: Simplify right side
    45,885.65x = 867,640,486.14
  5. Step 5: Solve for x
    x = 867,640,486.14/45,885.65
  6. Step 6: Final answer
    x = 18,908.75

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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.