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Finding the Fourth Proportional to 72,713.94, 100,359.60 and 47,184.45

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Solution

The fourth proportional to 72,713.94, 100,359.60 and 47,184.45 is: 65,123.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,713.94 : 100,359.60 = 47,184.45 : x
  2. Step 2: Convert to fraction form
    72,713.94/100,359.60 = 47,184.45/x
  3. Step 3: Cross multiply
    72,713.94x = 100,359.60 × 47,184.45
  4. Step 4: Simplify right side
    72,713.94x = 4,735,412,528.22
  5. Step 5: Solve for x
    x = 4,735,412,528.22/72,713.94
  6. Step 6: Final answer
    x = 65,123.86

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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.