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Finding the Fourth Proportional to 65,310.88, 89,969.04 and 47,353.12

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Solution

The fourth proportional to 65,310.88, 89,969.04 and 47,353.12 is: 65,231.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,310.88 : 89,969.04 = 47,353.12 : x
  2. Step 2: Convert to fraction form
    65,310.88/89,969.04 = 47,353.12/x
  3. Step 3: Cross multiply
    65,310.88x = 89,969.04 × 47,353.12
  4. Step 4: Simplify right side
    65,310.88x = 4,260,314,747.40
  5. Step 5: Solve for x
    x = 4,260,314,747.40/65,310.88
  6. Step 6: Final answer
    x = 65,231.32

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1.5x scale

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.