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Finding the Fourth Proportional to 61,358.94, 91,980.09 and 39,109.86

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Solution

The fourth proportional to 61,358.94, 91,980.09 and 39,109.86 is: 58,627.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,358.94 : 91,980.09 = 39,109.86 : x
  2. Step 2: Convert to fraction form
    61,358.94/91,980.09 = 39,109.86/x
  3. Step 3: Cross multiply
    61,358.94x = 91,980.09 × 39,109.86
  4. Step 4: Simplify right side
    61,358.94x = 3,597,328,442.69
  5. Step 5: Solve for x
    x = 3,597,328,442.69/61,358.94
  6. Step 6: Final answer
    x = 58,627.62

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1.5x scale

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.