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Finding the Fourth Proportional to 45,830, 68,745 and 12,998

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Solution

The fourth proportional to 45,830, 68,745 and 12,998 is: 19,497

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,830 : 68,745 = 12,998 : x
  2. Step 2: Convert to fraction form
    45,830/68,745 = 12,998/x
  3. Step 3: Cross multiply
    45,830x = 68,745 × 12,998
  4. Step 4: Simplify right side
    45,830x = 893,547,510
  5. Step 5: Solve for x
    x = 893,547,510/45,830
  6. Step 6: Final answer
    x = 19,497

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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.