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Finding the Third Proportional to 52,158 and 78,487

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Solution

The third proportional to 52,158 and 78,487 is: 118,106.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,158 : 78,487 = 78,487 : x
  2. Step 2: Convert to fraction form
    52,158/78,487 = 78,487/x
  3. Step 3: Cross multiply
    52,158x = 78,487 × 78,487
  4. Step 4: Simplify right side
    52,158x = 6,160,209,169
  5. Step 5: Solve for x
    x = 6,160,209,169/52,158
  6. Step 6: Final answer
    x = 118,106.70

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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.