Home / 84,558.24-126,856.08-28,400.40

Finding the Fourth Proportional to 84,558.24, 126,856.08 and 28,400.40

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Solution

The fourth proportional to 84,558.24, 126,856.08 and 28,400.40 is: 42,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,558.24 : 126,856.08 = 28,400.40 : x
  2. Step 2: Convert to fraction form
    84,558.24/126,856.08 = 28,400.40/x
  3. Step 3: Cross multiply
    84,558.24x = 126,856.08 × 28,400.40
  4. Step 4: Simplify right side
    84,558.24x = 3,602,763,414.43
  5. Step 5: Solve for x
    x = 3,602,763,414.43/84,558.24
  6. Step 6: Final answer
    x = 42,606.89

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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.