Home / 81,515.54-112,318.98-75,905.48

Finding the Fourth Proportional to 81,515.54, 112,318.98 and 75,905.48

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Solution

The fourth proportional to 81,515.54, 112,318.98 and 75,905.48 is: 104,588.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.54 : 112,318.98 = 75,905.48 : x
  2. Step 2: Convert to fraction form
    81,515.54/112,318.98 = 75,905.48/x
  3. Step 3: Cross multiply
    81,515.54x = 112,318.98 × 75,905.48
  4. Step 4: Simplify right side
    81,515.54x = 8,525,626,090.01
  5. Step 5: Solve for x
    x = 8,525,626,090.01/81,515.54
  6. Step 6: Final answer
    x = 104,588.97

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1.5x scale

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.