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Finding the Fourth Proportional to 96,621, 133,291.62 and 68,342.28

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Solution

The fourth proportional to 96,621, 133,291.62 and 68,342.28 is: 94,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,621 : 133,291.62 = 68,342.28 : x
  2. Step 2: Convert to fraction form
    96,621/133,291.62 = 68,342.28/x
  3. Step 3: Cross multiply
    96,621x = 133,291.62 × 68,342.28
  4. Step 4: Simplify right side
    96,621x = 9,109,453,215.69
  5. Step 5: Solve for x
    x = 9,109,453,215.69/96,621
  6. Step 6: Final answer
    x = 94,280.26

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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.