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Finding the Fourth Proportional to 65,719.60, 98,433.60 and 26,256.40

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Solution

The fourth proportional to 65,719.60, 98,433.60 and 26,256.40 is: 39,326.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,719.60 : 98,433.60 = 26,256.40 : x
  2. Step 2: Convert to fraction form
    65,719.60/98,433.60 = 26,256.40/x
  3. Step 3: Cross multiply
    65,719.60x = 98,433.60 × 26,256.40
  4. Step 4: Simplify right side
    65,719.60x = 2,584,511,975.04
  5. Step 5: Solve for x
    x = 2,584,511,975.04/65,719.60
  6. Step 6: Final answer
    x = 39,326.35

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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.