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Finding the Fourth Proportional to 61,810.20, 92,715.30 and 36,878.40

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Solution

The fourth proportional to 61,810.20, 92,715.30 and 36,878.40 is: 55,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,810.20 : 92,715.30 = 36,878.40 : x
  2. Step 2: Convert to fraction form
    61,810.20/92,715.30 = 36,878.40/x
  3. Step 3: Cross multiply
    61,810.20x = 92,715.30 × 36,878.40
  4. Step 4: Simplify right side
    61,810.20x = 3,419,191,919.52
  5. Step 5: Solve for x
    x = 3,419,191,919.52/61,810.20
  6. Step 6: Final answer
    x = 55,317.60

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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.