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Finding the Fourth Proportional to 84,622.40, 116,816.80 and 60,865.60

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Solution

The fourth proportional to 84,622.40, 116,816.80 and 60,865.60 is: 84,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,622.40 : 116,816.80 = 60,865.60 : x
  2. Step 2: Convert to fraction form
    84,622.40/116,816.80 = 60,865.60/x
  3. Step 3: Cross multiply
    84,622.40x = 116,816.80 × 60,865.60
  4. Step 4: Simplify right side
    84,622.40x = 7,110,124,622.08
  5. Step 5: Solve for x
    x = 7,110,124,622.08/84,622.40
  6. Step 6: Final answer
    x = 84,021.78

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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.