Home / 81,416.36-122,053.88-31,532.71

Finding the Fourth Proportional to 81,416.36, 122,053.88 and 31,532.71

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Solution

The fourth proportional to 81,416.36, 122,053.88 and 31,532.71 is: 47,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,416.36 : 122,053.88 = 31,532.71 : x
  2. Step 2: Convert to fraction form
    81,416.36/122,053.88 = 31,532.71/x
  3. Step 3: Cross multiply
    81,416.36x = 122,053.88 × 31,532.71
  4. Step 4: Simplify right side
    81,416.36x = 3,848,689,376.11
  5. Step 5: Solve for x
    x = 3,848,689,376.11/81,416.36
  6. Step 6: Final answer
    x = 47,271.70

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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.