Home / 68,784-94,921.92-40,507.08

Finding the Fourth Proportional to 68,784, 94,921.92 and 40,507.08

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Solution

The fourth proportional to 68,784, 94,921.92 and 40,507.08 is: 55,899.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,784 : 94,921.92 = 40,507.08 : x
  2. Step 2: Convert to fraction form
    68,784/94,921.92 = 40,507.08/x
  3. Step 3: Cross multiply
    68,784x = 94,921.92 × 40,507.08
  4. Step 4: Simplify right side
    68,784x = 3,845,009,807.19
  5. Step 5: Solve for x
    x = 3,845,009,807.19/68,784
  6. Step 6: Final answer
    x = 55,899.77

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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.