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Finding the Fourth Proportional to 84,495.80, 126,743.70 and 56,502.20

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Solution

The fourth proportional to 84,495.80, 126,743.70 and 56,502.20 is: 84,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,495.80 : 126,743.70 = 56,502.20 : x
  2. Step 2: Convert to fraction form
    84,495.80/126,743.70 = 56,502.20/x
  3. Step 3: Cross multiply
    84,495.80x = 126,743.70 × 56,502.20
  4. Step 4: Simplify right side
    84,495.80x = 7,161,297,886.14
  5. Step 5: Solve for x
    x = 7,161,297,886.14/84,495.80
  6. Step 6: Final answer
    x = 84,753.30

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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.