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Finding the Fourth Proportional to 72,424.26, 99,945.16 and 40,593.15

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Solution

The fourth proportional to 72,424.26, 99,945.16 and 40,593.15 is: 56,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,424.26 : 99,945.16 = 40,593.15 : x
  2. Step 2: Convert to fraction form
    72,424.26/99,945.16 = 40,593.15/x
  3. Step 3: Cross multiply
    72,424.26x = 99,945.16 × 40,593.15
  4. Step 4: Simplify right side
    72,424.26x = 4,057,088,871.65
  5. Step 5: Solve for x
    x = 4,057,088,871.65/72,424.26
  6. Step 6: Final answer
    x = 56,018.37

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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.