Home / 76,511.75-105,584.10-42,519.36

Finding the Fourth Proportional to 76,511.75, 105,584.10 and 42,519.36

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Solution

The fourth proportional to 76,511.75, 105,584.10 and 42,519.36 is: 58,675.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,511.75 : 105,584.10 = 42,519.36 : x
  2. Step 2: Convert to fraction form
    76,511.75/105,584.10 = 42,519.36/x
  3. Step 3: Cross multiply
    76,511.75x = 105,584.10 × 42,519.36
  4. Step 4: Simplify right side
    76,511.75x = 4,489,368,358.18
  5. Step 5: Solve for x
    x = 4,489,368,358.18/76,511.75
  6. Step 6: Final answer
    x = 58,675.55

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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.