Home / 68,639-94,723.40-38,423.56

Finding the Fourth Proportional to 68,639, 94,723.40 and 38,423.56

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Solution

The fourth proportional to 68,639, 94,723.40 and 38,423.56 is: 53,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,639 : 94,723.40 = 38,423.56 : x
  2. Step 2: Convert to fraction form
    68,639/94,723.40 = 38,423.56/x
  3. Step 3: Cross multiply
    68,639x = 94,723.40 × 38,423.56
  4. Step 4: Simplify right side
    68,639x = 3,639,610,243.30
  5. Step 5: Solve for x
    x = 3,639,610,243.30/68,639
  6. Step 6: Final answer
    x = 53,025.40

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1.5x scale

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.