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Finding the Third Proportional to 55,428.60 and 121,587.17

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Solution

The third proportional to 55,428.60 and 121,587.17 is: 266,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,428.60 : 121,587.17 = 121,587.17 : x
  2. Step 2: Convert to fraction form
    55,428.60/121,587.17 = 121,587.17/x
  3. Step 3: Cross multiply
    55,428.60x = 121,587.17 × 121,587.17
  4. Step 4: Simplify right side
    55,428.60x = 14,783,439,889.61
  5. Step 5: Solve for x
    x = 14,783,439,889.61/55,428.60
  6. Step 6: Final answer
    x = 266,711.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.