Home / 81,244.80-121,867.20-56,361.60

Finding the Fourth Proportional to 81,244.80, 121,867.20 and 56,361.60

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Solution

The fourth proportional to 81,244.80, 121,867.20 and 56,361.60 is: 84,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,244.80 : 121,867.20 = 56,361.60 : x
  2. Step 2: Convert to fraction form
    81,244.80/121,867.20 = 56,361.60/x
  3. Step 3: Cross multiply
    81,244.80x = 121,867.20 × 56,361.60
  4. Step 4: Simplify right side
    81,244.80x = 6,868,630,379.52
  5. Step 5: Solve for x
    x = 6,868,630,379.52/81,244.80
  6. Step 6: Final answer
    x = 84,542.40

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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.