Home / 76,124.18-105,039.79-43,418.88

Finding the Fourth Proportional to 76,124.18, 105,039.79 and 43,418.88

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Solution

The fourth proportional to 76,124.18, 105,039.79 and 43,418.88 is: 59,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,124.18 : 105,039.79 = 43,418.88 : x
  2. Step 2: Convert to fraction form
    76,124.18/105,039.79 = 43,418.88/x
  3. Step 3: Cross multiply
    76,124.18x = 105,039.79 × 43,418.88
  4. Step 4: Simplify right side
    76,124.18x = 4,560,709,928.69
  5. Step 5: Solve for x
    x = 4,560,709,928.69/76,124.18
  6. Step 6: Final answer
    x = 59,911.45

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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.