Home / 84,345.10-126,533.04-28,179.88

Finding the Fourth Proportional to 84,345.10, 126,533.04 and 28,179.88

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Solution

The fourth proportional to 84,345.10, 126,533.04 and 28,179.88 is: 42,274.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,345.10 : 126,533.04 = 28,179.88 : x
  2. Step 2: Convert to fraction form
    84,345.10/126,533.04 = 28,179.88/x
  3. Step 3: Cross multiply
    84,345.10x = 126,533.04 × 28,179.88
  4. Step 4: Simplify right side
    84,345.10x = 3,565,685,883.24
  5. Step 5: Solve for x
    x = 3,565,685,883.24/84,345.10
  6. Step 6: Final answer
    x = 42,274.96

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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.