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Finding the Fourth Proportional to 61,795.20, 92,692.80 and 20,246.40

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Solution

The fourth proportional to 61,795.20, 92,692.80 and 20,246.40 is: 30,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,795.20 : 92,692.80 = 20,246.40 : x
  2. Step 2: Convert to fraction form
    61,795.20/92,692.80 = 20,246.40/x
  3. Step 3: Cross multiply
    61,795.20x = 92,692.80 × 20,246.40
  4. Step 4: Simplify right side
    61,795.20x = 1,876,695,505.92
  5. Step 5: Solve for x
    x = 1,876,695,505.92/61,795.20
  6. Step 6: Final answer
    x = 30,369.60

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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.