Home / 76,394.36-105,425.34-42,405.04

Finding the Fourth Proportional to 76,394.36, 105,425.34 and 42,405.04

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Solution

The fourth proportional to 76,394.36, 105,425.34 and 42,405.04 is: 58,519.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,394.36 : 105,425.34 = 42,405.04 : x
  2. Step 2: Convert to fraction form
    76,394.36/105,425.34 = 42,405.04/x
  3. Step 3: Cross multiply
    76,394.36x = 105,425.34 × 42,405.04
  4. Step 4: Simplify right side
    76,394.36x = 4,470,565,232.59
  5. Step 5: Solve for x
    x = 4,470,565,232.59/76,394.36
  6. Step 6: Final answer
    x = 58,519.57

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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.