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Finding the Third Proportional to 21,423 and 46,135.50

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Solution

The third proportional to 21,423 and 46,135.50 is: 99,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423 : 46,135.50 = 46,135.50 : x
  2. Step 2: Convert to fraction form
    21,423/46,135.50 = 46,135.50/x
  3. Step 3: Cross multiply
    21,423x = 46,135.50 × 46,135.50
  4. Step 4: Simplify right side
    21,423x = 2,128,484,360.25
  5. Step 5: Solve for x
    x = 2,128,484,360.25/21,423
  6. Step 6: Final answer
    x = 99,355.10

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.