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Finding the Fourth Proportional to 84,863.52, 117,108.54 and 47,140.20

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Solution

The fourth proportional to 84,863.52, 117,108.54 and 47,140.20 is: 65,051.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,863.52 : 117,108.54 = 47,140.20 : x
  2. Step 2: Convert to fraction form
    84,863.52/117,108.54 = 47,140.20/x
  3. Step 3: Cross multiply
    84,863.52x = 117,108.54 × 47,140.20
  4. Step 4: Simplify right side
    84,863.52x = 5,520,519,997.31
  5. Step 5: Solve for x
    x = 5,520,519,997.31/84,863.52
  6. Step 6: Final answer
    x = 65,051.74

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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.