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Finding the Fourth Proportional to 81,277.10, 113,865.70 and 81,277.10

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Solution

The fourth proportional to 81,277.10, 113,865.70 and 81,277.10 is: 113,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,277.10 : 113,865.70 = 81,277.10 : x
  2. Step 2: Convert to fraction form
    81,277.10/113,865.70 = 81,277.10/x
  3. Step 3: Cross multiply
    81,277.10x = 113,865.70 × 81,277.10
  4. Step 4: Simplify right side
    81,277.10x = 9,254,673,885.47
  5. Step 5: Solve for x
    x = 9,254,673,885.47/81,277.10
  6. Step 6: Final answer
    x = 113,865.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.