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Finding the Fourth Proportional to 84,358.56, 126,274.32 and 56,301.60

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Solution

The fourth proportional to 84,358.56, 126,274.32 and 56,301.60 is: 84,276.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,358.56 : 126,274.32 = 56,301.60 : x
  2. Step 2: Convert to fraction form
    84,358.56/126,274.32 = 56,301.60/x
  3. Step 3: Cross multiply
    84,358.56x = 126,274.32 × 56,301.60
  4. Step 4: Simplify right side
    84,358.56x = 7,109,446,254.91
  5. Step 5: Solve for x
    x = 7,109,446,254.91/84,358.56
  6. Step 6: Final answer
    x = 84,276.52

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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.