Home / 81,015.35-111,752.02-52,289.91

Finding the Fourth Proportional to 81,015.35, 111,752.02 and 52,289.91

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Solution

The fourth proportional to 81,015.35, 111,752.02 and 52,289.91 is: 72,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,015.35 : 111,752.02 = 52,289.91 : x
  2. Step 2: Convert to fraction form
    81,015.35/111,752.02 = 52,289.91/x
  3. Step 3: Cross multiply
    81,015.35x = 111,752.02 × 52,289.91
  4. Step 4: Simplify right side
    81,015.35x = 5,843,503,133.48
  5. Step 5: Solve for x
    x = 5,843,503,133.48/81,015.35
  6. Step 6: Final answer
    x = 72,128.35

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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.