Home / 84,302.93-126,373.21-28,103.86

Finding the Fourth Proportional to 84,302.93, 126,373.21 and 28,103.86

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Solution

The fourth proportional to 84,302.93, 126,373.21 and 28,103.86 is: 42,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,302.93 : 126,373.21 = 28,103.86 : x
  2. Step 2: Convert to fraction form
    84,302.93/126,373.21 = 28,103.86/x
  3. Step 3: Cross multiply
    84,302.93x = 126,373.21 × 28,103.86
  4. Step 4: Simplify right side
    84,302.93x = 3,551,575,247.38
  5. Step 5: Solve for x
    x = 3,551,575,247.38/84,302.93
  6. Step 6: Final answer
    x = 42,128.73

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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.