Home / 80,822.81-111,538.93-45,012.81

Finding the Fourth Proportional to 80,822.81, 111,538.93 and 45,012.81

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Solution

The fourth proportional to 80,822.81, 111,538.93 and 45,012.81 is: 62,119.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,822.81 : 111,538.93 = 45,012.81 : x
  2. Step 2: Convert to fraction form
    80,822.81/111,538.93 = 45,012.81/x
  3. Step 3: Cross multiply
    80,822.81x = 111,538.93 × 45,012.81
  4. Step 4: Simplify right side
    80,822.81x = 5,020,681,055.07
  5. Step 5: Solve for x
    x = 5,020,681,055.07/80,822.81
  6. Step 6: Final answer
    x = 62,119.61

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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.