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Finding the Fourth Proportional to 65,548.32, 90,456.48 and 35,740.32

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Solution

The fourth proportional to 65,548.32, 90,456.48 and 35,740.32 is: 49,321.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,548.32 : 90,456.48 = 35,740.32 : x
  2. Step 2: Convert to fraction form
    65,548.32/90,456.48 = 35,740.32/x
  3. Step 3: Cross multiply
    65,548.32x = 90,456.48 × 35,740.32
  4. Step 4: Simplify right side
    65,548.32x = 3,232,943,541.27
  5. Step 5: Solve for x
    x = 3,232,943,541.27/65,548.32
  6. Step 6: Final answer
    x = 49,321.53

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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.