Home / 105,479.74-145,556.43-57,723.85

Finding the Fourth Proportional to 105,479.74, 145,556.43 and 57,723.85

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Solution

The fourth proportional to 105,479.74, 145,556.43 and 57,723.85 is: 79,655.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,479.74 : 145,556.43 = 57,723.85 : x
  2. Step 2: Convert to fraction form
    105,479.74/145,556.43 = 57,723.85/x
  3. Step 3: Cross multiply
    105,479.74x = 145,556.43 × 57,723.85
  4. Step 4: Simplify right side
    105,479.74x = 8,402,077,531.86
  5. Step 5: Solve for x
    x = 8,402,077,531.86/105,479.74
  6. Step 6: Final answer
    x = 79,655.84

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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.