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Finding the Fourth Proportional to 65,406.97, 90,260.48 and 36,726.86

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Solution

The fourth proportional to 65,406.97, 90,260.48 and 36,726.86 is: 50,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,406.97 : 90,260.48 = 36,726.86 : x
  2. Step 2: Convert to fraction form
    65,406.97/90,260.48 = 36,726.86/x
  3. Step 3: Cross multiply
    65,406.97x = 90,260.48 × 36,726.86
  4. Step 4: Simplify right side
    65,406.97x = 3,314,984,054.51
  5. Step 5: Solve for x
    x = 3,314,984,054.51/65,406.97
  6. Step 6: Final answer
    x = 50,682.43

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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.