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Finding the Fourth Proportional to 65,641.08, 98,440.56 and 28,191

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Solution

The fourth proportional to 65,641.08, 98,440.56 and 28,191 is: 42,277.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,641.08 : 98,440.56 = 28,191 : x
  2. Step 2: Convert to fraction form
    65,641.08/98,440.56 = 28,191/x
  3. Step 3: Cross multiply
    65,641.08x = 98,440.56 × 28,191
  4. Step 4: Simplify right side
    65,641.08x = 2,775,137,826.96
  5. Step 5: Solve for x
    x = 2,775,137,826.96/65,641.08
  6. Step 6: Final answer
    x = 42,277.46

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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.