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Finding the Fourth Proportional to 91,424.30, 126,114.76 and 53,179.54

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Solution

The fourth proportional to 91,424.30, 126,114.76 and 53,179.54 is: 73,358.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,424.30 : 126,114.76 = 53,179.54 : x
  2. Step 2: Convert to fraction form
    91,424.30/126,114.76 = 53,179.54/x
  3. Step 3: Cross multiply
    91,424.30x = 126,114.76 × 53,179.54
  4. Step 4: Simplify right side
    91,424.30x = 6,706,724,924.01
  5. Step 5: Solve for x
    x = 6,706,724,924.01/91,424.30
  6. Step 6: Final answer
    x = 73,358.23

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1.5x scale

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.