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Finding the Third Proportional to 5,128,585.88 and 8,120,985.19

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Solution

The third proportional to 5,128,585.88 and 8,120,985.19 is: 12,859,373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128,585.88 : 8,120,985.19 = 8,120,985.19 : x
  2. Step 2: Convert to fraction form
    5,128,585.88/8,120,985.19 = 8,120,985.19/x
  3. Step 3: Cross multiply
    5,128,585.88x = 8,120,985.19 × 8,120,985.19
  4. Step 4: Simplify right side
    5,128,585.88x = 65,950,400,415,594.41
  5. Step 5: Solve for x
    x = 65,950,400,415,594.41/5,128,585.88
  6. Step 6: Final answer
    x = 12,859,373.33

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.