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Finding the Fourth Proportional to 77,015.57, 115,260.50 and 64,549.67

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Solution

The fourth proportional to 77,015.57, 115,260.50 and 64,549.67 is: 96,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,015.57 : 115,260.50 = 64,549.67 : x
  2. Step 2: Convert to fraction form
    77,015.57/115,260.50 = 64,549.67/x
  3. Step 3: Cross multiply
    77,015.57x = 115,260.50 × 64,549.67
  4. Step 4: Simplify right side
    77,015.57x = 7,440,027,239.04
  5. Step 5: Solve for x
    x = 7,440,027,239.04/77,015.57
  6. Step 6: Final answer
    x = 96,604.20

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1.5x scale

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.