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Finding the Fourth Proportional to 115,606.42, 159,536.80 and 67,859.76

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Solution

The fourth proportional to 115,606.42, 159,536.80 and 67,859.76 is: 93,646.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,606.42 : 159,536.80 = 67,859.76 : x
  2. Step 2: Convert to fraction form
    115,606.42/159,536.80 = 67,859.76/x
  3. Step 3: Cross multiply
    115,606.42x = 159,536.80 × 67,859.76
  4. Step 4: Simplify right side
    115,606.42x = 10,826,129,642.26
  5. Step 5: Solve for x
    x = 10,826,129,642.26/115,606.42
  6. Step 6: Final answer
    x = 93,646.44

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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.