Home / 80,913.60-111,661.20-45,103.32

Finding the Fourth Proportional to 80,913.60, 111,661.20 and 45,103.32

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Solution

The fourth proportional to 80,913.60, 111,661.20 and 45,103.32 is: 62,242.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,913.60 : 111,661.20 = 45,103.32 : x
  2. Step 2: Convert to fraction form
    80,913.60/111,661.20 = 45,103.32/x
  3. Step 3: Cross multiply
    80,913.60x = 111,661.20 × 45,103.32
  4. Step 4: Simplify right side
    80,913.60x = 5,036,290,835.18
  5. Step 5: Solve for x
    x = 5,036,290,835.18/80,913.60
  6. Step 6: Final answer
    x = 62,242.82

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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.