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Finding the Fourth Proportional to 61,225.40, 91,838.10 and 43,340.60

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Solution

The fourth proportional to 61,225.40, 91,838.10 and 43,340.60 is: 65,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,225.40 : 91,838.10 = 43,340.60 : x
  2. Step 2: Convert to fraction form
    61,225.40/91,838.10 = 43,340.60/x
  3. Step 3: Cross multiply
    61,225.40x = 91,838.10 × 43,340.60
  4. Step 4: Simplify right side
    61,225.40x = 3,980,318,356.86
  5. Step 5: Solve for x
    x = 3,980,318,356.86/61,225.40
  6. Step 6: Final answer
    x = 65,010.90

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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.