Home / 68,390.38-94,378.47-38,175.45

Finding the Fourth Proportional to 68,390.38, 94,378.47 and 38,175.45

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Solution

The fourth proportional to 68,390.38, 94,378.47 and 38,175.45 is: 52,681.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.38 : 94,378.47 = 38,175.45 : x
  2. Step 2: Convert to fraction form
    68,390.38/94,378.47 = 38,175.45/x
  3. Step 3: Cross multiply
    68,390.38x = 94,378.47 × 38,175.45
  4. Step 4: Simplify right side
    68,390.38x = 3,602,940,596.36
  5. Step 5: Solve for x
    x = 3,602,940,596.36/68,390.38
  6. Step 6: Final answer
    x = 52,681.98

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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.