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Finding the Fourth Proportional to 61,166.34, 84,354.30 and 39,634.20

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Solution

The fourth proportional to 61,166.34, 84,354.30 and 39,634.20 is: 54,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,166.34 : 84,354.30 = 39,634.20 : x
  2. Step 2: Convert to fraction form
    61,166.34/84,354.30 = 39,634.20/x
  3. Step 3: Cross multiply
    61,166.34x = 84,354.30 × 39,634.20
  4. Step 4: Simplify right side
    61,166.34x = 3,343,315,197.06
  5. Step 5: Solve for x
    x = 3,343,315,197.06/61,166.34
  6. Step 6: Final answer
    x = 54,659.40

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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.