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Finding the Fourth Proportional to 113,634, 156,816 and 62,648.59

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Solution

The fourth proportional to 113,634, 156,816 and 62,648.59 is: 86,455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,634 : 156,816 = 62,648.59 : x
  2. Step 2: Convert to fraction form
    113,634/156,816 = 62,648.59/x
  3. Step 3: Cross multiply
    113,634x = 156,816 × 62,648.59
  4. Step 4: Simplify right side
    113,634x = 9,824,301,289.44
  5. Step 5: Solve for x
    x = 9,824,301,289.44/113,634
  6. Step 6: Final answer
    x = 86,455.65

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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.