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Finding the Fourth Proportional to 61,810.72, 92,733.36 and 20,286.88

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Solution

The fourth proportional to 61,810.72, 92,733.36 and 20,286.88 is: 30,435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,810.72 : 92,733.36 = 20,286.88 : x
  2. Step 2: Convert to fraction form
    61,810.72/92,733.36 = 20,286.88/x
  3. Step 3: Cross multiply
    61,810.72x = 92,733.36 × 20,286.88
  4. Step 4: Simplify right side
    61,810.72x = 1,881,270,546.32
  5. Step 5: Solve for x
    x = 1,881,270,546.32/61,810.72
  6. Step 6: Final answer
    x = 30,435.99

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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.