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Finding the Fourth Proportional to 115,695, 159,659.10 and 62,703

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Solution

The fourth proportional to 115,695, 159,659.10 and 62,703 is: 86,530.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,695 : 159,659.10 = 62,703 : x
  2. Step 2: Convert to fraction form
    115,695/159,659.10 = 62,703/x
  3. Step 3: Cross multiply
    115,695x = 159,659.10 × 62,703
  4. Step 4: Simplify right side
    115,695x = 10,011,104,547.30
  5. Step 5: Solve for x
    x = 10,011,104,547.30/115,695
  6. Step 6: Final answer
    x = 86,530.14

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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.