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Finding the Fourth Proportional to 77,073.40, 115,610.10 and 45,969.40

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Solution

The fourth proportional to 77,073.40, 115,610.10 and 45,969.40 is: 68,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,073.40 : 115,610.10 = 45,969.40 : x
  2. Step 2: Convert to fraction form
    77,073.40/115,610.10 = 45,969.40/x
  3. Step 3: Cross multiply
    77,073.40x = 115,610.10 × 45,969.40
  4. Step 4: Simplify right side
    77,073.40x = 5,314,526,930.94
  5. Step 5: Solve for x
    x = 5,314,526,930.94/77,073.40
  6. Step 6: Final answer
    x = 68,954.10

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1.5x scale

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.