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Finding the Fourth Proportional to 72,366.52, 99,867.60 and 40,534.60

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Solution

The fourth proportional to 72,366.52, 99,867.60 and 40,534.60 is: 55,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,366.52 : 99,867.60 = 40,534.60 : x
  2. Step 2: Convert to fraction form
    72,366.52/99,867.60 = 40,534.60/x
  3. Step 3: Cross multiply
    72,366.52x = 99,867.60 × 40,534.60
  4. Step 4: Simplify right side
    72,366.52x = 4,048,093,218.96
  5. Step 5: Solve for x
    x = 4,048,093,218.96/72,366.52
  6. Step 6: Final answer
    x = 55,938.76

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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.