Home / 76,986.18-106,267.14-45,143.46

Finding the Fourth Proportional to 76,986.18, 106,267.14 and 45,143.46

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Solution

The fourth proportional to 76,986.18, 106,267.14 and 45,143.46 is: 62,313.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,986.18 : 106,267.14 = 45,143.46 : x
  2. Step 2: Convert to fraction form
    76,986.18/106,267.14 = 45,143.46/x
  3. Step 3: Cross multiply
    76,986.18x = 106,267.14 × 45,143.46
  4. Step 4: Simplify right side
    76,986.18x = 4,797,266,383.90
  5. Step 5: Solve for x
    x = 4,797,266,383.90/76,986.18
  6. Step 6: Final answer
    x = 62,313.34

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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.