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Finding the Fourth Proportional to 117,686.52, 162,407.77 and 63,971.71

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Solution

The fourth proportional to 117,686.52, 162,407.77 and 63,971.71 is: 88,281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,686.52 : 162,407.77 = 63,971.71 : x
  2. Step 2: Convert to fraction form
    117,686.52/162,407.77 = 63,971.71/x
  3. Step 3: Cross multiply
    117,686.52x = 162,407.77 × 63,971.71
  4. Step 4: Simplify right side
    117,686.52x = 10,389,502,198.24
  5. Step 5: Solve for x
    x = 10,389,502,198.24/117,686.52
  6. Step 6: Final answer
    x = 88,281.16

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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.