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Finding the Fourth Proportional to 72,349.56, 99,847.98 and 40,529.16

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Solution

The fourth proportional to 72,349.56, 99,847.98 and 40,529.16 is: 55,933.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,349.56 : 99,847.98 = 40,529.16 : x
  2. Step 2: Convert to fraction form
    72,349.56/99,847.98 = 40,529.16/x
  3. Step 3: Cross multiply
    72,349.56x = 99,847.98 × 40,529.16
  4. Step 4: Simplify right side
    72,349.56x = 4,046,754,757.10
  5. Step 5: Solve for x
    x = 4,046,754,757.10/72,349.56
  6. Step 6: Final answer
    x = 55,933.37

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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.