Home / 83,628.36-115,461.18-51,831

Finding the Fourth Proportional to 83,628.36, 115,461.18 and 51,831

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Solution

The fourth proportional to 83,628.36, 115,461.18 and 51,831 is: 71,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,628.36 : 115,461.18 = 51,831 : x
  2. Step 2: Convert to fraction form
    83,628.36/115,461.18 = 51,831/x
  3. Step 3: Cross multiply
    83,628.36x = 115,461.18 × 51,831
  4. Step 4: Simplify right side
    83,628.36x = 5,984,468,420.58
  5. Step 5: Solve for x
    x = 5,984,468,420.58/83,628.36
  6. Step 6: Final answer
    x = 71,560.27

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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.