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Finding the Fourth Proportional to 84,346.52, 116,485.36 and 72,961.38

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Solution

The fourth proportional to 84,346.52, 116,485.36 and 72,961.38 is: 100,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,346.52 : 116,485.36 = 72,961.38 : x
  2. Step 2: Convert to fraction form
    84,346.52/116,485.36 = 72,961.38/x
  3. Step 3: Cross multiply
    84,346.52x = 116,485.36 × 72,961.38
  4. Step 4: Simplify right side
    84,346.52x = 8,498,932,615.40
  5. Step 5: Solve for x
    x = 8,498,932,615.40/84,346.52
  6. Step 6: Final answer
    x = 100,762.10

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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.