Home / 72,346.20-108,519.30-54,605.40

Finding the Fourth Proportional to 72,346.20, 108,519.30 and 54,605.40

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Solution

The fourth proportional to 72,346.20, 108,519.30 and 54,605.40 is: 81,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,346.20 : 108,519.30 = 54,605.40 : x
  2. Step 2: Convert to fraction form
    72,346.20/108,519.30 = 54,605.40/x
  3. Step 3: Cross multiply
    72,346.20x = 108,519.30 × 54,605.40
  4. Step 4: Simplify right side
    72,346.20x = 5,925,739,784.22
  5. Step 5: Solve for x
    x = 5,925,739,784.22/72,346.20
  6. Step 6: Final answer
    x = 81,908.10

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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.