Home / 76,321.24-105,324.18-42,330.40

Finding the Fourth Proportional to 76,321.24, 105,324.18 and 42,330.40

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Solution

The fourth proportional to 76,321.24, 105,324.18 and 42,330.40 is: 58,416.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,321.24 : 105,324.18 = 42,330.40 : x
  2. Step 2: Convert to fraction form
    76,321.24/105,324.18 = 42,330.40/x
  3. Step 3: Cross multiply
    76,321.24x = 105,324.18 × 42,330.40
  4. Step 4: Simplify right side
    76,321.24x = 4,458,414,669.07
  5. Step 5: Solve for x
    x = 4,458,414,669.07/76,321.24
  6. Step 6: Final answer
    x = 58,416.43

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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.