Home / 76,729.40-105,902.91-51,564.32

Finding the Fourth Proportional to 76,729.40, 105,902.91 and 51,564.32

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Solution

The fourth proportional to 76,729.40, 105,902.91 and 51,564.32 is: 71,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,729.40 : 105,902.91 = 51,564.32 : x
  2. Step 2: Convert to fraction form
    76,729.40/105,902.91 = 51,564.32/x
  3. Step 3: Cross multiply
    76,729.40x = 105,902.91 × 51,564.32
  4. Step 4: Simplify right side
    76,729.40x = 5,460,810,752.84
  5. Step 5: Solve for x
    x = 5,460,810,752.84/76,729.40
  6. Step 6: Final answer
    x = 71,169.74

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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.