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Finding the Fourth Proportional to 59,006.72, 81,446.40 and 38,878.40

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Solution

The fourth proportional to 59,006.72, 81,446.40 and 38,878.40 is: 53,663.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,006.72 : 81,446.40 = 38,878.40 : x
  2. Step 2: Convert to fraction form
    59,006.72/81,446.40 = 38,878.40/x
  3. Step 3: Cross multiply
    59,006.72x = 81,446.40 × 38,878.40
  4. Step 4: Simplify right side
    59,006.72x = 3,166,505,717.76
  5. Step 5: Solve for x
    x = 3,166,505,717.76/59,006.72
  6. Step 6: Final answer
    x = 53,663.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.