Home / 76,450.88-105,421.56-53,782.40

Finding the Fourth Proportional to 76,450.88, 105,421.56 and 53,782.40

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Solution

The fourth proportional to 76,450.88, 105,421.56 and 53,782.40 is: 74,162.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,450.88 : 105,421.56 = 53,782.40 : x
  2. Step 2: Convert to fraction form
    76,450.88/105,421.56 = 53,782.40/x
  3. Step 3: Cross multiply
    76,450.88x = 105,421.56 × 53,782.40
  4. Step 4: Simplify right side
    76,450.88x = 5,669,824,508.54
  5. Step 5: Solve for x
    x = 5,669,824,508.54/76,450.88
  6. Step 6: Final answer
    x = 74,162.97

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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.