Home / 55,056.89-75,979.51-31,188.52

Finding the Fourth Proportional to 55,056.89, 75,979.51 and 31,188.52

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Solution

The fourth proportional to 55,056.89, 75,979.51 and 31,188.52 is: 43,040.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,056.89 : 75,979.51 = 31,188.52 : x
  2. Step 2: Convert to fraction form
    55,056.89/75,979.51 = 31,188.52/x
  3. Step 3: Cross multiply
    55,056.89x = 75,979.51 × 31,188.52
  4. Step 4: Simplify right side
    55,056.89x = 2,369,688,311.28
  5. Step 5: Solve for x
    x = 2,369,688,311.28/55,056.89
  6. Step 6: Final answer
    x = 43,040.72

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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.