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Finding the Third Proportional to 5,128,803 and 8,121,334.50

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Solution

The third proportional to 5,128,803 and 8,121,334.50 is: 12,859,935.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128,803 : 8,121,334.50 = 8,121,334.50 : x
  2. Step 2: Convert to fraction form
    5,128,803/8,121,334.50 = 8,121,334.50/x
  3. Step 3: Cross multiply
    5,128,803x = 8,121,334.50 × 8,121,334.50
  4. Step 4: Simplify right side
    5,128,803x = 65,956,074,060,890.25
  5. Step 5: Solve for x
    x = 65,956,074,060,890.25/5,128,803
  6. Step 6: Final answer
    x = 12,859,935.17

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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.