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Finding the Fourth Proportional to 84,018.92, 115,948.73 and 48,215.48

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Solution

The fourth proportional to 84,018.92, 115,948.73 and 48,215.48 is: 66,538.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,018.92 : 115,948.73 = 48,215.48 : x
  2. Step 2: Convert to fraction form
    84,018.92/115,948.73 = 48,215.48/x
  3. Step 3: Cross multiply
    84,018.92x = 115,948.73 × 48,215.48
  4. Step 4: Simplify right side
    84,018.92x = 5,590,522,851.52
  5. Step 5: Solve for x
    x = 5,590,522,851.52/84,018.92
  6. Step 6: Final answer
    x = 66,538.86

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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.