Home / 70,405.77-97,135.68-40,169.28

Finding the Fourth Proportional to 70,405.77, 97,135.68 and 40,169.28

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Solution

The fourth proportional to 70,405.77, 97,135.68 and 40,169.28 is: 55,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,405.77 : 97,135.68 = 40,169.28 : x
  2. Step 2: Convert to fraction form
    70,405.77/97,135.68 = 40,169.28/x
  3. Step 3: Cross multiply
    70,405.77x = 97,135.68 × 40,169.28
  4. Step 4: Simplify right side
    70,405.77x = 3,901,870,327.91
  5. Step 5: Solve for x
    x = 3,901,870,327.91/70,405.77
  6. Step 6: Final answer
    x = 55,419.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.