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Finding the Fourth Proportional to 61,885.92, 85,421.97 and 39,529.92

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Solution

The fourth proportional to 61,885.92, 85,421.97 and 39,529.92 is: 54,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,885.92 : 85,421.97 = 39,529.92 : x
  2. Step 2: Convert to fraction form
    61,885.92/85,421.97 = 39,529.92/x
  3. Step 3: Cross multiply
    61,885.92x = 85,421.97 × 39,529.92
  4. Step 4: Simplify right side
    61,885.92x = 3,376,723,640.34
  5. Step 5: Solve for x
    x = 3,376,723,640.34/61,885.92
  6. Step 6: Final answer
    x = 54,563.68

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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.