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Finding the Fourth Proportional to 81,617.60, 122,296.80 and 60,622.40

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Solution

The fourth proportional to 81,617.60, 122,296.80 and 60,622.40 is: 90,837.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,617.60 : 122,296.80 = 60,622.40 : x
  2. Step 2: Convert to fraction form
    81,617.60/122,296.80 = 60,622.40/x
  3. Step 3: Cross multiply
    81,617.60x = 122,296.80 × 60,622.40
  4. Step 4: Simplify right side
    81,617.60x = 7,413,925,528.32
  5. Step 5: Solve for x
    x = 7,413,925,528.32/81,617.60
  6. Step 6: Final answer
    x = 90,837.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.