Home / 72,924.20-109,386.30-43,326.80

Finding the Fourth Proportional to 72,924.20, 109,386.30 and 43,326.80

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Solution

The fourth proportional to 72,924.20, 109,386.30 and 43,326.80 is: 64,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,924.20 : 109,386.30 = 43,326.80 : x
  2. Step 2: Convert to fraction form
    72,924.20/109,386.30 = 43,326.80/x
  3. Step 3: Cross multiply
    72,924.20x = 109,386.30 × 43,326.80
  4. Step 4: Simplify right side
    72,924.20x = 4,739,358,342.84
  5. Step 5: Solve for x
    x = 4,739,358,342.84/72,924.20
  6. Step 6: Final answer
    x = 64,990.20

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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.