Home / 66,940.28-92,376.81-38,645.36

Finding the Fourth Proportional to 66,940.28, 92,376.81 and 38,645.36

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Solution

The fourth proportional to 66,940.28, 92,376.81 and 38,645.36 is: 53,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,940.28 : 92,376.81 = 38,645.36 : x
  2. Step 2: Convert to fraction form
    66,940.28/92,376.81 = 38,645.36/x
  3. Step 3: Cross multiply
    66,940.28x = 92,376.81 × 38,645.36
  4. Step 4: Simplify right side
    66,940.28x = 3,569,935,078.10
  5. Step 5: Solve for x
    x = 3,569,935,078.10/66,940.28
  6. Step 6: Final answer
    x = 53,330.15

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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.