Home / 77,113.77-115,633.85-45,101.87

Finding the Fourth Proportional to 77,113.77, 115,633.85 and 45,101.87

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Solution

The fourth proportional to 77,113.77, 115,633.85 and 45,101.87 is: 67,631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,113.77 : 115,633.85 = 45,101.87 : x
  2. Step 2: Convert to fraction form
    77,113.77/115,633.85 = 45,101.87/x
  3. Step 3: Cross multiply
    77,113.77x = 115,633.85 × 45,101.87
  4. Step 4: Simplify right side
    77,113.77x = 5,215,302,066.62
  5. Step 5: Solve for x
    x = 5,215,302,066.62/77,113.77
  6. Step 6: Final answer
    x = 67,631.27

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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.