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Finding the Fourth Proportional to 61,887.10, 92,830.65 and 40,891.90

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Solution

The fourth proportional to 61,887.10, 92,830.65 and 40,891.90 is: 61,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,887.10 : 92,830.65 = 40,891.90 : x
  2. Step 2: Convert to fraction form
    61,887.10/92,830.65 = 40,891.90/x
  3. Step 3: Cross multiply
    61,887.10x = 92,830.65 × 40,891.90
  4. Step 4: Simplify right side
    61,887.10x = 3,796,021,656.74
  5. Step 5: Solve for x
    x = 3,796,021,656.74/61,887.10
  6. Step 6: Final answer
    x = 61,337.85

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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.