Home / 55,056.70-75,979.92-31,186.81

Finding the Fourth Proportional to 55,056.70, 75,979.92 and 31,186.81

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Solution

The fourth proportional to 55,056.70, 75,979.92 and 31,186.81 is: 43,038.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,056.70 : 75,979.92 = 31,186.81 : x
  2. Step 2: Convert to fraction form
    55,056.70/75,979.92 = 31,186.81/x
  3. Step 3: Cross multiply
    55,056.70x = 75,979.92 × 31,186.81
  4. Step 4: Simplify right side
    55,056.70x = 2,369,571,328.86
  5. Step 5: Solve for x
    x = 2,369,571,328.86/55,056.70
  6. Step 6: Final answer
    x = 43,038.75

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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.