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Finding the Fourth Proportional to 61,310, 91,881.84 and 27,988.76

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Solution

The fourth proportional to 61,310, 91,881.84 and 27,988.76 is: 41,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,310 : 91,881.84 = 27,988.76 : x
  2. Step 2: Convert to fraction form
    61,310/91,881.84 = 27,988.76/x
  3. Step 3: Cross multiply
    61,310x = 91,881.84 × 27,988.76
  4. Step 4: Simplify right side
    61,310x = 2,571,658,768.12
  5. Step 5: Solve for x
    x = 2,571,658,768.12/61,310
  6. Step 6: Final answer
    x = 41,945.18

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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.