Home / 76,511.12-105,584.60-42,519.68

Finding the Fourth Proportional to 76,511.12, 105,584.60 and 42,519.68

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Solution

The fourth proportional to 76,511.12, 105,584.60 and 42,519.68 is: 58,676.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,511.12 : 105,584.60 = 42,519.68 : x
  2. Step 2: Convert to fraction form
    76,511.12/105,584.60 = 42,519.68/x
  3. Step 3: Cross multiply
    76,511.12x = 105,584.60 × 42,519.68
  4. Step 4: Simplify right side
    76,511.12x = 4,489,423,404.93
  5. Step 5: Solve for x
    x = 4,489,423,404.93/76,511.12
  6. Step 6: Final answer
    x = 58,676.74

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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.