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Finding the Fourth Proportional to 54,578,374.78, 81,867,562.17 and 25,880,560.78

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Solution

The fourth proportional to 54,578,374.78, 81,867,562.17 and 25,880,560.78 is: 38,820,841.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,578,374.78 : 81,867,562.17 = 25,880,560.78 : x
  2. Step 2: Convert to fraction form
    54,578,374.78/81,867,562.17 = 25,880,560.78/x
  3. Step 3: Cross multiply
    54,578,374.78x = 81,867,562.17 × 25,880,560.78
  4. Step 4: Simplify right side
    54,578,374.78x = 2,118,778,418,112,373.25
  5. Step 5: Solve for x
    x = 2,118,778,418,112,373.25/54,578,374.78
  6. Step 6: Final answer
    x = 38,820,841.16

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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.