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Finding the Fourth Proportional to 84,638.80, 116,748.48 and 54,463.36

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Solution

The fourth proportional to 84,638.80, 116,748.48 and 54,463.36 is: 75,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,638.80 : 116,748.48 = 54,463.36 : x
  2. Step 2: Convert to fraction form
    84,638.80/116,748.48 = 54,463.36/x
  3. Step 3: Cross multiply
    84,638.80x = 116,748.48 × 54,463.36
  4. Step 4: Simplify right side
    84,638.80x = 6,358,514,495.69
  5. Step 5: Solve for x
    x = 6,358,514,495.69/84,638.80
  6. Step 6: Final answer
    x = 75,125.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.