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Finding the Fourth Proportional to 45,678.54, 68,509.71 and 12,401.19

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Solution

The fourth proportional to 45,678.54, 68,509.71 and 12,401.19 is: 18,599.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,678.54 : 68,509.71 = 12,401.19 : x
  2. Step 2: Convert to fraction form
    45,678.54/68,509.71 = 12,401.19/x
  3. Step 3: Cross multiply
    45,678.54x = 68,509.71 × 12,401.19
  4. Step 4: Simplify right side
    45,678.54x = 849,601,930.55
  5. Step 5: Solve for x
    x = 849,601,930.55/45,678.54
  6. Step 6: Final answer
    x = 18,599.59

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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.