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Finding the Fourth Proportional to 89,866.56, 134,799.84 and 30,702.72

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Solution

The fourth proportional to 89,866.56, 134,799.84 and 30,702.72 is: 46,054.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,866.56 : 134,799.84 = 30,702.72 : x
  2. Step 2: Convert to fraction form
    89,866.56/134,799.84 = 30,702.72/x
  3. Step 3: Cross multiply
    89,866.56x = 134,799.84 × 30,702.72
  4. Step 4: Simplify right side
    89,866.56x = 4,138,721,743.56
  5. Step 5: Solve for x
    x = 4,138,721,743.56/89,866.56
  6. Step 6: Final answer
    x = 46,054.08

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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.