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Finding the Fourth Proportional to 61,193.34, 84,464.64 and 39,975.66

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Solution

The fourth proportional to 61,193.34, 84,464.64 and 39,975.66 is: 55,178.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,193.34 : 84,464.64 = 39,975.66 : x
  2. Step 2: Convert to fraction form
    61,193.34/84,464.64 = 39,975.66/x
  3. Step 3: Cross multiply
    61,193.34x = 84,464.64 × 39,975.66
  4. Step 4: Simplify right side
    61,193.34x = 3,376,529,730.66
  5. Step 5: Solve for x
    x = 3,376,529,730.66/61,193.34
  6. Step 6: Final answer
    x = 55,178.06

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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.