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Finding the Fourth Proportional to 88,078, 132,130.76 and 28,900.21

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Solution

The fourth proportional to 88,078, 132,130.76 and 28,900.21 is: 43,354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,078 : 132,130.76 = 28,900.21 : x
  2. Step 2: Convert to fraction form
    88,078/132,130.76 = 28,900.21/x
  3. Step 3: Cross multiply
    88,078x = 132,130.76 × 28,900.21
  4. Step 4: Simplify right side
    88,078x = 3,818,606,711.46
  5. Step 5: Solve for x
    x = 3,818,606,711.46/88,078
  6. Step 6: Final answer
    x = 43,354.83

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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.