Home / 77,857.20-116,858.45-39,934.94

Finding the Fourth Proportional to 77,857.20, 116,858.45 and 39,934.94

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Solution

The fourth proportional to 77,857.20, 116,858.45 and 39,934.94 is: 59,939.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,857.20 : 116,858.45 = 39,934.94 : x
  2. Step 2: Convert to fraction form
    77,857.20/116,858.45 = 39,934.94/x
  3. Step 3: Cross multiply
    77,857.20x = 116,858.45 × 39,934.94
  4. Step 4: Simplify right side
    77,857.20x = 4,666,735,189.24
  5. Step 5: Solve for x
    x = 4,666,735,189.24/77,857.20
  6. Step 6: Final answer
    x = 59,939.67

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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.