Home / 81,217.86-112,090.94-45,409.98

Finding the Fourth Proportional to 81,217.86, 112,090.94 and 45,409.98

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Solution

The fourth proportional to 81,217.86, 112,090.94 and 45,409.98 is: 62,671.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,217.86 : 112,090.94 = 45,409.98 : x
  2. Step 2: Convert to fraction form
    81,217.86/112,090.94 = 45,409.98/x
  3. Step 3: Cross multiply
    81,217.86x = 112,090.94 × 45,409.98
  4. Step 4: Simplify right side
    81,217.86x = 5,090,047,343.58
  5. Step 5: Solve for x
    x = 5,090,047,343.58/81,217.86
  6. Step 6: Final answer
    x = 62,671.53

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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.