Home / 31,687.89-47,484.64-28,887.22

Finding the Fourth Proportional to 31,687.89, 47,484.64 and 28,887.22

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Solution

The fourth proportional to 31,687.89, 47,484.64 and 28,887.22 is: 43,287.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.89 : 47,484.64 = 28,887.22 : x
  2. Step 2: Convert to fraction form
    31,687.89/47,484.64 = 28,887.22/x
  3. Step 3: Cross multiply
    31,687.89x = 47,484.64 × 28,887.22
  4. Step 4: Simplify right side
    31,687.89x = 1,371,699,242.30
  5. Step 5: Solve for x
    x = 1,371,699,242.30/31,687.89
  6. Step 6: Final answer
    x = 43,287.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.