Home / 84,261.17-126,349.41-28,081.60

Finding the Fourth Proportional to 84,261.17, 126,349.41 and 28,081.60

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Solution

The fourth proportional to 84,261.17, 126,349.41 and 28,081.60 is: 42,108.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,261.17 : 126,349.41 = 28,081.60 : x
  2. Step 2: Convert to fraction form
    84,261.17/126,349.41 = 28,081.60/x
  3. Step 3: Cross multiply
    84,261.17x = 126,349.41 × 28,081.60
  4. Step 4: Simplify right side
    84,261.17x = 3,548,092,960.11
  5. Step 5: Solve for x
    x = 3,548,092,960.11/84,261.17
  6. Step 6: Final answer
    x = 42,108.28

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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.