Home / 77,477.40-115,922.76-45,904.38

Finding the Fourth Proportional to 77,477.40, 115,922.76 and 45,904.38

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Solution

The fourth proportional to 77,477.40, 115,922.76 and 45,904.38 is: 68,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,477.40 : 115,922.76 = 45,904.38 : x
  2. Step 2: Convert to fraction form
    77,477.40/115,922.76 = 45,904.38/x
  3. Step 3: Cross multiply
    77,477.40x = 115,922.76 × 45,904.38
  4. Step 4: Simplify right side
    77,477.40x = 5,321,362,425.69
  5. Step 5: Solve for x
    x = 5,321,362,425.69/77,477.40
  6. Step 6: Final answer
    x = 68,682.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.