Home / 85,159.68-117,520.40-49,370.48

Finding the Fourth Proportional to 85,159.68, 117,520.40 and 49,370.48

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Solution

The fourth proportional to 85,159.68, 117,520.40 and 49,370.48 is: 68,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,159.68 : 117,520.40 = 49,370.48 : x
  2. Step 2: Convert to fraction form
    85,159.68/117,520.40 = 49,370.48/x
  3. Step 3: Cross multiply
    85,159.68x = 117,520.40 × 49,370.48
  4. Step 4: Simplify right side
    85,159.68x = 5,802,038,557.79
  5. Step 5: Solve for x
    x = 5,802,038,557.79/85,159.68
  6. Step 6: Final answer
    x = 68,131.29

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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.