Home / 51,391.45-77,076.58-19,790.67

Finding the Fourth Proportional to 51,391.45, 77,076.58 and 19,790.67

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Solution

The fourth proportional to 51,391.45, 77,076.58 and 19,790.67 is: 29,681.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,391.45 : 77,076.58 = 19,790.67 : x
  2. Step 2: Convert to fraction form
    51,391.45/77,076.58 = 19,790.67/x
  3. Step 3: Cross multiply
    51,391.45x = 77,076.58 × 19,790.67
  4. Step 4: Simplify right side
    51,391.45x = 1,525,397,159.51
  5. Step 5: Solve for x
    x = 1,525,397,159.51/51,391.45
  6. Step 6: Final answer
    x = 29,681.92

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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.