Home / 81,459.30-122,298.30-52,007.70

Finding the Fourth Proportional to 81,459.30, 122,298.30 and 52,007.70

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Solution

The fourth proportional to 81,459.30, 122,298.30 and 52,007.70 is: 78,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,459.30 : 122,298.30 = 52,007.70 : x
  2. Step 2: Convert to fraction form
    81,459.30/122,298.30 = 52,007.70/x
  3. Step 3: Cross multiply
    81,459.30x = 122,298.30 × 52,007.70
  4. Step 4: Simplify right side
    81,459.30x = 6,360,453,296.91
  5. Step 5: Solve for x
    x = 6,360,453,296.91/81,459.30
  6. Step 6: Final answer
    x = 78,081.36

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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.