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Finding the Fourth Proportional to 61,393.80, 84,672.90 and 36,219

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Solution

The fourth proportional to 61,393.80, 84,672.90 and 36,219 is: 49,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,393.80 : 84,672.90 = 36,219 : x
  2. Step 2: Convert to fraction form
    61,393.80/84,672.90 = 36,219/x
  3. Step 3: Cross multiply
    61,393.80x = 84,672.90 × 36,219
  4. Step 4: Simplify right side
    61,393.80x = 3,066,767,765.10
  5. Step 5: Solve for x
    x = 3,066,767,765.10/61,393.80
  6. Step 6: Final answer
    x = 49,952.40

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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.