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Finding the Third Proportional to 45,128 and 66,152.50

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Solution

The third proportional to 45,128 and 66,152.50 is: 96,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,128 : 66,152.50 = 66,152.50 : x
  2. Step 2: Convert to fraction form
    45,128/66,152.50 = 66,152.50/x
  3. Step 3: Cross multiply
    45,128x = 66,152.50 × 66,152.50
  4. Step 4: Simplify right side
    45,128x = 4,376,153,256.25
  5. Step 5: Solve for x
    x = 4,376,153,256.25/45,128
  6. Step 6: Final answer
    x = 96,972.02

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.