Home / 51,421.59-70,960.37-28,760.63

Finding the Fourth Proportional to 51,421.59, 70,960.37 and 28,760.63

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Solution

The fourth proportional to 51,421.59, 70,960.37 and 28,760.63 is: 39,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,421.59 : 70,960.37 = 28,760.63 : x
  2. Step 2: Convert to fraction form
    51,421.59/70,960.37 = 28,760.63/x
  3. Step 3: Cross multiply
    51,421.59x = 70,960.37 × 28,760.63
  4. Step 4: Simplify right side
    51,421.59x = 2,040,864,447.63
  5. Step 5: Solve for x
    x = 2,040,864,447.63/51,421.59
  6. Step 6: Final answer
    x = 39,688.86

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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.