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Finding the Third Proportional to 18,559,885.78 and 28,078,708.78

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Solution

The third proportional to 18,559,885.78 and 28,078,708.78 is: 42,479,457.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,559,885.78 : 28,078,708.78 = 28,078,708.78 : x
  2. Step 2: Convert to fraction form
    18,559,885.78/28,078,708.78 = 28,078,708.78/x
  3. Step 3: Cross multiply
    18,559,885.78x = 28,078,708.78 × 28,078,708.78
  4. Step 4: Simplify right side
    18,559,885.78x = 788,413,886,822,245.88
  5. Step 5: Solve for x
    x = 788,413,886,822,245.88/18,559,885.78
  6. Step 6: Final answer
    x = 42,479,457.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.