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Finding the Fourth Proportional to 45,402, 68,103 and 12,570

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Solution

The fourth proportional to 45,402, 68,103 and 12,570 is: 18,855

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,402 : 68,103 = 12,570 : x
  2. Step 2: Convert to fraction form
    45,402/68,103 = 12,570/x
  3. Step 3: Cross multiply
    45,402x = 68,103 × 12,570
  4. Step 4: Simplify right side
    45,402x = 856,054,710
  5. Step 5: Solve for x
    x = 856,054,710/45,402
  6. Step 6: Final answer
    x = 18,855

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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.