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Finding the Fourth Proportional to 72,940.67, 100,560.63 and 54,713.91

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Solution

The fourth proportional to 72,940.67, 100,560.63 and 54,713.91 is: 75,432.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,940.67 : 100,560.63 = 54,713.91 : x
  2. Step 2: Convert to fraction form
    72,940.67/100,560.63 = 54,713.91/x
  3. Step 3: Cross multiply
    72,940.67x = 100,560.63 × 54,713.91
  4. Step 4: Simplify right side
    72,940.67x = 5,502,065,259.36
  5. Step 5: Solve for x
    x = 5,502,065,259.36/72,940.67
  6. Step 6: Final answer
    x = 75,432.07

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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.