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Finding the Fourth Proportional to 68,965,682.88, 103,461,274.52 and 19,779,476.97

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Solution

The fourth proportional to 68,965,682.88, 103,461,274.52 and 19,779,476.97 is: 29,672,872.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,965,682.88 : 103,461,274.52 = 19,779,476.97 : x
  2. Step 2: Convert to fraction form
    68,965,682.88/103,461,274.52 = 19,779,476.97/x
  3. Step 3: Cross multiply
    68,965,682.88x = 103,461,274.52 × 19,779,476.97
  4. Step 4: Simplify right side
    68,965,682.88x = 2,046,409,897,018,443
  5. Step 5: Solve for x
    x = 2,046,409,897,018,443/68,965,682.88
  6. Step 6: Final answer
    x = 29,672,872.24

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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.