Home / 81,946.60-122,958.30-42,548.20

Finding the Fourth Proportional to 81,946.60, 122,958.30 and 42,548.20

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Solution

The fourth proportional to 81,946.60, 122,958.30 and 42,548.20 is: 63,842.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,946.60 : 122,958.30 = 42,548.20 : x
  2. Step 2: Convert to fraction form
    81,946.60/122,958.30 = 42,548.20/x
  3. Step 3: Cross multiply
    81,946.60x = 122,958.30 × 42,548.20
  4. Step 4: Simplify right side
    81,946.60x = 5,231,654,340.06
  5. Step 5: Solve for x
    x = 5,231,654,340.06/81,946.60
  6. Step 6: Final answer
    x = 63,842.24

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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.