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Finding the Third Proportional to 56,416 and 87,070

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Solution

The third proportional to 56,416 and 87,070 is: 134,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,416 : 87,070 = 87,070 : x
  2. Step 2: Convert to fraction form
    56,416/87,070 = 87,070/x
  3. Step 3: Cross multiply
    56,416x = 87,070 × 87,070
  4. Step 4: Simplify right side
    56,416x = 7,581,184,900
  5. Step 5: Solve for x
    x = 7,581,184,900/56,416
  6. Step 6: Final answer
    x = 134,380.05

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.