Home / 51,667.40-77,428.20-31,887.20

Finding the Fourth Proportional to 51,667.40, 77,428.20 and 31,887.20

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Solution

The fourth proportional to 51,667.40, 77,428.20 and 31,887.20 is: 47,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,667.40 : 77,428.20 = 31,887.20 : x
  2. Step 2: Convert to fraction form
    51,667.40/77,428.20 = 31,887.20/x
  3. Step 3: Cross multiply
    51,667.40x = 77,428.20 × 31,887.20
  4. Step 4: Simplify right side
    51,667.40x = 2,468,968,499.04
  5. Step 5: Solve for x
    x = 2,468,968,499.04/51,667.40
  6. Step 6: Final answer
    x = 47,785.81

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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.