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Finding the Fourth Proportional to 88,101.49, 121,580.14 and 47,815.28

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Solution

The fourth proportional to 88,101.49, 121,580.14 and 47,815.28 is: 65,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,101.49 : 121,580.14 = 47,815.28 : x
  2. Step 2: Convert to fraction form
    88,101.49/121,580.14 = 47,815.28/x
  3. Step 3: Cross multiply
    88,101.49x = 121,580.14 × 47,815.28
  4. Step 4: Simplify right side
    88,101.49x = 5,813,388,344.33
  5. Step 5: Solve for x
    x = 5,813,388,344.33/88,101.49
  6. Step 6: Final answer
    x = 65,985.13

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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.