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Finding the Fourth Proportional to 48,618, 72,927 and 15,786

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Solution

The fourth proportional to 48,618, 72,927 and 15,786 is: 23,679

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,618 : 72,927 = 15,786 : x
  2. Step 2: Convert to fraction form
    48,618/72,927 = 15,786/x
  3. Step 3: Cross multiply
    48,618x = 72,927 × 15,786
  4. Step 4: Simplify right side
    48,618x = 1,151,225,622
  5. Step 5: Solve for x
    x = 1,151,225,622/48,618
  6. Step 6: Final answer
    x = 23,679

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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.