Home / 76,740.15-105,917.75-51,575.07

Finding the Fourth Proportional to 76,740.15, 105,917.75 and 51,575.07

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Solution

The fourth proportional to 76,740.15, 105,917.75 and 51,575.07 is: 71,184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,740.15 : 105,917.75 = 51,575.07 : x
  2. Step 2: Convert to fraction form
    76,740.15/105,917.75 = 51,575.07/x
  3. Step 3: Cross multiply
    76,740.15x = 105,917.75 × 51,575.07
  4. Step 4: Simplify right side
    76,740.15x = 5,462,715,370.49
  5. Step 5: Solve for x
    x = 5,462,715,370.49/76,740.15
  6. Step 6: Final answer
    x = 71,184.58

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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.