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Finding the Fourth Proportional to 61,887.90, 92,831.85 and 40,892.70

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Solution

The fourth proportional to 61,887.90, 92,831.85 and 40,892.70 is: 61,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,887.90 : 92,831.85 = 40,892.70 : x
  2. Step 2: Convert to fraction form
    61,887.90/92,831.85 = 40,892.70/x
  3. Step 3: Cross multiply
    61,887.90x = 92,831.85 × 40,892.70
  4. Step 4: Simplify right side
    61,887.90x = 3,796,144,992.50
  5. Step 5: Solve for x
    x = 3,796,144,992.50/61,887.90
  6. Step 6: Final answer
    x = 61,339.05

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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.