Home / 68,719.64-94,838.57-40,430.80

Finding the Fourth Proportional to 68,719.64, 94,838.57 and 40,430.80

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Solution

The fourth proportional to 68,719.64, 94,838.57 and 40,430.80 is: 55,797.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,719.64 : 94,838.57 = 40,430.80 : x
  2. Step 2: Convert to fraction form
    68,719.64/94,838.57 = 40,430.80/x
  3. Step 3: Cross multiply
    68,719.64x = 94,838.57 × 40,430.80
  4. Step 4: Simplify right side
    68,719.64x = 3,834,398,904.21
  5. Step 5: Solve for x
    x = 3,834,398,904.21/68,719.64
  6. Step 6: Final answer
    x = 55,797.71

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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.