Home / 86,905.50-119,929.59-47,161.50

Finding the Fourth Proportional to 86,905.50, 119,929.59 and 47,161.50

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Solution

The fourth proportional to 86,905.50, 119,929.59 and 47,161.50 is: 65,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,905.50 : 119,929.59 = 47,161.50 : x
  2. Step 2: Convert to fraction form
    86,905.50/119,929.59 = 47,161.50/x
  3. Step 3: Cross multiply
    86,905.50x = 119,929.59 × 47,161.50
  4. Step 4: Simplify right side
    86,905.50x = 5,656,059,358.79
  5. Step 5: Solve for x
    x = 5,656,059,358.79/86,905.50
  6. Step 6: Final answer
    x = 65,082.87

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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.