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Finding the Fourth Proportional to 88,113.60, 132,256.80 and 43,790.40

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Solution

The fourth proportional to 88,113.60, 132,256.80 and 43,790.40 is: 65,728.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,113.60 : 132,256.80 = 43,790.40 : x
  2. Step 2: Convert to fraction form
    88,113.60/132,256.80 = 43,790.40/x
  3. Step 3: Cross multiply
    88,113.60x = 132,256.80 × 43,790.40
  4. Step 4: Simplify right side
    88,113.60x = 5,791,578,174.72
  5. Step 5: Solve for x
    x = 5,791,578,174.72/88,113.60
  6. Step 6: Final answer
    x = 65,728.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.