Home / 80,890.65-121,316.54-41,427.45

Finding the Fourth Proportional to 80,890.65, 121,316.54 and 41,427.45

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Solution

The fourth proportional to 80,890.65, 121,316.54 and 41,427.45 is: 62,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,890.65 : 121,316.54 = 41,427.45 : x
  2. Step 2: Convert to fraction form
    80,890.65/121,316.54 = 41,427.45/x
  3. Step 3: Cross multiply
    80,890.65x = 121,316.54 × 41,427.45
  4. Step 4: Simplify right side
    80,890.65x = 5,025,834,687.89
  5. Step 5: Solve for x
    x = 5,025,834,687.89/80,890.65
  6. Step 6: Final answer
    x = 62,131.22

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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.