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Finding the Fourth Proportional to 88,173.81, 121,679.82 and 47,887.56

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Solution

The fourth proportional to 88,173.81, 121,679.82 and 47,887.56 is: 66,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,173.81 : 121,679.82 = 47,887.56 : x
  2. Step 2: Convert to fraction form
    88,173.81/121,679.82 = 47,887.56/x
  3. Step 3: Cross multiply
    88,173.81x = 121,679.82 × 47,887.56
  4. Step 4: Simplify right side
    88,173.81x = 5,826,949,681.04
  5. Step 5: Solve for x
    x = 5,826,949,681.04/88,173.81
  6. Step 6: Final answer
    x = 66,084.81

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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.