Home / 80,804.28-121,247.42-36,421.16

Finding the Fourth Proportional to 80,804.28, 121,247.42 and 36,421.16

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Solution

The fourth proportional to 80,804.28, 121,247.42 and 36,421.16 is: 54,650.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,804.28 : 121,247.42 = 36,421.16 : x
  2. Step 2: Convert to fraction form
    80,804.28/121,247.42 = 36,421.16/x
  3. Step 3: Cross multiply
    80,804.28x = 121,247.42 × 36,421.16
  4. Step 4: Simplify right side
    80,804.28x = 4,415,971,577.08
  5. Step 5: Solve for x
    x = 4,415,971,577.08/80,804.28
  6. Step 6: Final answer
    x = 54,650.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.