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Finding the Fourth Proportional to 61,107.45, 84,348.91 and 38,484.28

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Solution

The fourth proportional to 61,107.45, 84,348.91 and 38,484.28 is: 53,121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,107.45 : 84,348.91 = 38,484.28 : x
  2. Step 2: Convert to fraction form
    61,107.45/84,348.91 = 38,484.28/x
  3. Step 3: Cross multiply
    61,107.45x = 84,348.91 × 38,484.28
  4. Step 4: Simplify right side
    61,107.45x = 3,246,107,223.68
  5. Step 5: Solve for x
    x = 3,246,107,223.68/61,107.45
  6. Step 6: Final answer
    x = 53,121.30

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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.