Home / 77,749.92-116,474.54-65,120

Finding the Fourth Proportional to 77,749.92, 116,474.54 and 65,120

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Solution

The fourth proportional to 77,749.92, 116,474.54 and 65,120 is: 97,554.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,749.92 : 116,474.54 = 65,120 : x
  2. Step 2: Convert to fraction form
    77,749.92/116,474.54 = 65,120/x
  3. Step 3: Cross multiply
    77,749.92x = 116,474.54 × 65,120
  4. Step 4: Simplify right side
    77,749.92x = 7,584,822,044.80
  5. Step 5: Solve for x
    x = 7,584,822,044.80/77,749.92
  6. Step 6: Final answer
    x = 97,554.08

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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.