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Finding the Fourth Proportional to 64,884.75, 89,408.05 and 47,862.01

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Solution

The fourth proportional to 64,884.75, 89,408.05 and 47,862.01 is: 65,951.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,884.75 : 89,408.05 = 47,862.01 : x
  2. Step 2: Convert to fraction form
    64,884.75/89,408.05 = 47,862.01/x
  3. Step 3: Cross multiply
    64,884.75x = 89,408.05 × 47,862.01
  4. Step 4: Simplify right side
    64,884.75x = 4,279,249,495.97
  5. Step 5: Solve for x
    x = 4,279,249,495.97/64,884.75
  6. Step 6: Final answer
    x = 65,951.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.