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Finding the Fourth Proportional to 115,509.70, 173,322.15 and 65,628.10

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Solution

The fourth proportional to 115,509.70, 173,322.15 and 65,628.10 is: 98,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,509.70 : 173,322.15 = 65,628.10 : x
  2. Step 2: Convert to fraction form
    115,509.70/173,322.15 = 65,628.10/x
  3. Step 3: Cross multiply
    115,509.70x = 173,322.15 × 65,628.10
  4. Step 4: Simplify right side
    115,509.70x = 11,374,803,392.42
  5. Step 5: Solve for x
    x = 11,374,803,392.42/115,509.70
  6. Step 6: Final answer
    x = 98,474.88

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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.