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Finding the Fourth Proportional to 84,108.51, 116,079.48 and 48,285.45

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Solution

The fourth proportional to 84,108.51, 116,079.48 and 48,285.45 is: 66,639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,108.51 : 116,079.48 = 48,285.45 : x
  2. Step 2: Convert to fraction form
    84,108.51/116,079.48 = 48,285.45/x
  3. Step 3: Cross multiply
    84,108.51x = 116,079.48 × 48,285.45
  4. Step 4: Simplify right side
    84,108.51x = 5,604,949,927.57
  5. Step 5: Solve for x
    x = 5,604,949,927.57/84,108.51
  6. Step 6: Final answer
    x = 66,639.51

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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.