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Finding the Fourth Proportional to 91,465.76, 126,223.24 and 51,179.60

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Solution

The fourth proportional to 91,465.76, 126,223.24 and 51,179.60 is: 70,628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,465.76 : 126,223.24 = 51,179.60 : x
  2. Step 2: Convert to fraction form
    91,465.76/126,223.24 = 51,179.60/x
  3. Step 3: Cross multiply
    91,465.76x = 126,223.24 × 51,179.60
  4. Step 4: Simplify right side
    91,465.76x = 6,460,054,933.90
  5. Step 5: Solve for x
    x = 6,460,054,933.90/91,465.76
  6. Step 6: Final answer
    x = 70,628.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.