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Finding the Fourth Proportional to 65,380.65, 97,921.53 and 51,308.52

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Solution

The fourth proportional to 65,380.65, 97,921.53 and 51,308.52 is: 76,845.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,380.65 : 97,921.53 = 51,308.52 : x
  2. Step 2: Convert to fraction form
    65,380.65/97,921.53 = 51,308.52/x
  3. Step 3: Cross multiply
    65,380.65x = 97,921.53 × 51,308.52
  4. Step 4: Simplify right side
    65,380.65x = 5,024,208,780.44
  5. Step 5: Solve for x
    x = 5,024,208,780.44/65,380.65
  6. Step 6: Final answer
    x = 76,845.50

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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.