Home / 72,320.66-99,812.99-40,491.61

Finding the Fourth Proportional to 72,320.66, 99,812.99 and 40,491.61

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Solution

The fourth proportional to 72,320.66, 99,812.99 and 40,491.61 is: 55,884.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,320.66 : 99,812.99 = 40,491.61 : x
  2. Step 2: Convert to fraction form
    72,320.66/99,812.99 = 40,491.61/x
  3. Step 3: Cross multiply
    72,320.66x = 99,812.99 × 40,491.61
  4. Step 4: Simplify right side
    72,320.66x = 4,041,588,212.02
  5. Step 5: Solve for x
    x = 4,041,588,212.02/72,320.66
  6. Step 6: Final answer
    x = 55,884.28

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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.