Home / 65,511.21-90,405.77-37,218.45

Finding the Fourth Proportional to 65,511.21, 90,405.77 and 37,218.45

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Solution

The fourth proportional to 65,511.21, 90,405.77 and 37,218.45 is: 51,361.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,511.21 : 90,405.77 = 37,218.45 : x
  2. Step 2: Convert to fraction form
    65,511.21/90,405.77 = 37,218.45/x
  3. Step 3: Cross multiply
    65,511.21x = 90,405.77 × 37,218.45
  4. Step 4: Simplify right side
    65,511.21x = 3,364,762,630.46
  5. Step 5: Solve for x
    x = 3,364,762,630.46/65,511.21
  6. Step 6: Final answer
    x = 51,361.63

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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.