Home / 76,414.62-105,447.44-42,421.12

Finding the Fourth Proportional to 76,414.62, 105,447.44 and 42,421.12

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Solution

The fourth proportional to 76,414.62, 105,447.44 and 42,421.12 is: 58,538.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,414.62 : 105,447.44 = 42,421.12 : x
  2. Step 2: Convert to fraction form
    76,414.62/105,447.44 = 42,421.12/x
  3. Step 3: Cross multiply
    76,414.62x = 105,447.44 × 42,421.12
  4. Step 4: Simplify right side
    76,414.62x = 4,473,198,505.93
  5. Step 5: Solve for x
    x = 4,473,198,505.93/76,414.62
  6. Step 6: Final answer
    x = 58,538.52

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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.