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Finding the Fourth Proportional to 88,101.72, 121,580.44 and 47,815.48

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Solution

The fourth proportional to 88,101.72, 121,580.44 and 47,815.48 is: 65,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,101.72 : 121,580.44 = 47,815.48 : x
  2. Step 2: Convert to fraction form
    88,101.72/121,580.44 = 47,815.48/x
  3. Step 3: Cross multiply
    88,101.72x = 121,580.44 × 47,815.48
  4. Step 4: Simplify right side
    88,101.72x = 5,813,427,097.21
  5. Step 5: Solve for x
    x = 5,813,427,097.21/88,101.72
  6. Step 6: Final answer
    x = 65,985.40

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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.