Home / 68,640.24-94,715.70-38,421.36

Finding the Fourth Proportional to 68,640.24, 94,715.70 and 38,421.36

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Solution

The fourth proportional to 68,640.24, 94,715.70 and 38,421.36 is: 53,017.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,640.24 : 94,715.70 = 38,421.36 : x
  2. Step 2: Convert to fraction form
    68,640.24/94,715.70 = 38,421.36/x
  3. Step 3: Cross multiply
    68,640.24x = 94,715.70 × 38,421.36
  4. Step 4: Simplify right side
    68,640.24x = 3,639,106,007.35
  5. Step 5: Solve for x
    x = 3,639,106,007.35/68,640.24
  6. Step 6: Final answer
    x = 53,017.09

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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.