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Finding the Fourth Proportional to 56,394.74, 84,599.88 and 18,957.72

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Solution

The fourth proportional to 56,394.74, 84,599.88 and 18,957.72 is: 28,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,394.74 : 84,599.88 = 18,957.72 : x
  2. Step 2: Convert to fraction form
    56,394.74/84,599.88 = 18,957.72/x
  3. Step 3: Cross multiply
    56,394.74x = 84,599.88 × 18,957.72
  4. Step 4: Simplify right side
    56,394.74x = 1,603,820,837.07
  5. Step 5: Solve for x
    x = 1,603,820,837.07/56,394.74
  6. Step 6: Final answer
    x = 28,439.19

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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.