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Finding the Fourth Proportional to 115,502.95, 159,392.37 and 64,516.39

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Solution

The fourth proportional to 115,502.95, 159,392.37 and 64,516.39 is: 89,031.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,502.95 : 159,392.37 = 64,516.39 : x
  2. Step 2: Convert to fraction form
    115,502.95/159,392.37 = 64,516.39/x
  3. Step 3: Cross multiply
    115,502.95x = 159,392.37 × 64,516.39
  4. Step 4: Simplify right side
    115,502.95x = 10,283,420,305.94
  5. Step 5: Solve for x
    x = 10,283,420,305.94/115,502.95
  6. Step 6: Final answer
    x = 89,031.67

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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.