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Finding the Fourth Proportional to 65,488.80, 98,150.60 and 28,004.56

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Solution

The fourth proportional to 65,488.80, 98,150.60 and 28,004.56 is: 41,971.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,488.80 : 98,150.60 = 28,004.56 : x
  2. Step 2: Convert to fraction form
    65,488.80/98,150.60 = 28,004.56/x
  3. Step 3: Cross multiply
    65,488.80x = 98,150.60 × 28,004.56
  4. Step 4: Simplify right side
    65,488.80x = 2,748,664,366.74
  5. Step 5: Solve for x
    x = 2,748,664,366.74/65,488.80
  6. Step 6: Final answer
    x = 41,971.52

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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.