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Finding the Fourth Proportional to 65,505.28, 90,394.88 and 35,696.64

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Solution

The fourth proportional to 65,505.28, 90,394.88 and 35,696.64 is: 49,260.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,505.28 : 90,394.88 = 35,696.64 : x
  2. Step 2: Convert to fraction form
    65,505.28/90,394.88 = 35,696.64/x
  3. Step 3: Cross multiply
    65,505.28x = 90,394.88 × 35,696.64
  4. Step 4: Simplify right side
    65,505.28x = 3,226,793,489.20
  5. Step 5: Solve for x
    x = 3,226,793,489.20/65,505.28
  6. Step 6: Final answer
    x = 49,260.05

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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.