Home / 77,399.19-116,206.38-39,986.91

Finding the Fourth Proportional to 77,399.19, 116,206.38 and 39,986.91

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Solution

The fourth proportional to 77,399.19, 116,206.38 and 39,986.91 is: 60,035.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,399.19 : 116,206.38 = 39,986.91 : x
  2. Step 2: Convert to fraction form
    77,399.19/116,206.38 = 39,986.91/x
  3. Step 3: Cross multiply
    77,399.19x = 116,206.38 × 39,986.91
  4. Step 4: Simplify right side
    77,399.19x = 4,646,734,058.49
  5. Step 5: Solve for x
    x = 4,646,734,058.49/77,399.19
  6. Step 6: Final answer
    x = 60,035.95

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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.