Home / 65,405.72-90,277.26-40,276.28

Finding the Fourth Proportional to 65,405.72, 90,277.26 and 40,276.28

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Solution

The fourth proportional to 65,405.72, 90,277.26 and 40,276.28 is: 55,591.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,405.72 : 90,277.26 = 40,276.28 : x
  2. Step 2: Convert to fraction form
    65,405.72/90,277.26 = 40,276.28/x
  3. Step 3: Cross multiply
    65,405.72x = 90,277.26 × 40,276.28
  4. Step 4: Simplify right side
    65,405.72x = 3,636,032,201.39
  5. Step 5: Solve for x
    x = 3,636,032,201.39/65,405.72
  6. Step 6: Final answer
    x = 55,591.96

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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.