Home / 76,716.48-105,901.50-51,580.56

Finding the Fourth Proportional to 76,716.48, 105,901.50 and 51,580.56

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Solution

The fourth proportional to 76,716.48, 105,901.50 and 51,580.56 is: 71,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,716.48 : 105,901.50 = 51,580.56 : x
  2. Step 2: Convert to fraction form
    76,716.48/105,901.50 = 51,580.56/x
  3. Step 3: Cross multiply
    76,716.48x = 105,901.50 × 51,580.56
  4. Step 4: Simplify right side
    76,716.48x = 5,462,458,674.84
  5. Step 5: Solve for x
    x = 5,462,458,674.84/76,716.48
  6. Step 6: Final answer
    x = 71,203.20

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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.