Home / 68,128.48-94,016.40-38,320.48

Finding the Fourth Proportional to 68,128.48, 94,016.40 and 38,320.48

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Solution

The fourth proportional to 68,128.48, 94,016.40 and 38,320.48 is: 52,881.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.48 : 94,016.40 = 38,320.48 : x
  2. Step 2: Convert to fraction form
    68,128.48/94,016.40 = 38,320.48/x
  3. Step 3: Cross multiply
    68,128.48x = 94,016.40 × 38,320.48
  4. Step 4: Simplify right side
    68,128.48x = 3,602,753,575.87
  5. Step 5: Solve for x
    x = 3,602,753,575.87/68,128.48
  6. Step 6: Final answer
    x = 52,881.75

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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.