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Finding the Fourth Proportional to 65,577.72, 98,377.80 and 20,590.46

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Solution

The fourth proportional to 65,577.72, 98,377.80 and 20,590.46 is: 30,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,577.72 : 98,377.80 = 20,590.46 : x
  2. Step 2: Convert to fraction form
    65,577.72/98,377.80 = 20,590.46/x
  3. Step 3: Cross multiply
    65,577.72x = 98,377.80 × 20,590.46
  4. Step 4: Simplify right side
    65,577.72x = 2,025,644,155.79
  5. Step 5: Solve for x
    x = 2,025,644,155.79/65,577.72
  6. Step 6: Final answer
    x = 30,889.21

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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.