Home / 45,111.65-67,678.20-13,524.35

Finding the Fourth Proportional to 45,111.65, 67,678.20 and 13,524.35

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Solution

The fourth proportional to 45,111.65, 67,678.20 and 13,524.35 is: 20,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,111.65 : 67,678.20 = 13,524.35 : x
  2. Step 2: Convert to fraction form
    45,111.65/67,678.20 = 13,524.35/x
  3. Step 3: Cross multiply
    45,111.65x = 67,678.20 × 13,524.35
  4. Step 4: Simplify right side
    45,111.65x = 915,303,325.78
  5. Step 5: Solve for x
    x = 915,303,325.78/45,111.65
  6. Step 6: Final answer
    x = 20,289.74

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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.