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Finding the Fourth Proportional to 61,930.80, 92,896.20 and 38,570.40

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Solution

The fourth proportional to 61,930.80, 92,896.20 and 38,570.40 is: 57,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,930.80 : 92,896.20 = 38,570.40 : x
  2. Step 2: Convert to fraction form
    61,930.80/92,896.20 = 38,570.40/x
  3. Step 3: Cross multiply
    61,930.80x = 92,896.20 × 38,570.40
  4. Step 4: Simplify right side
    61,930.80x = 3,583,043,592.48
  5. Step 5: Solve for x
    x = 3,583,043,592.48/61,930.80
  6. Step 6: Final answer
    x = 57,855.60

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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.