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Finding the Fourth Proportional to 88,608.60, 132,929.70 and 28,653.18

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Solution

The fourth proportional to 88,608.60, 132,929.70 and 28,653.18 is: 42,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,608.60 : 132,929.70 = 28,653.18 : x
  2. Step 2: Convert to fraction form
    88,608.60/132,929.70 = 28,653.18/x
  3. Step 3: Cross multiply
    88,608.60x = 132,929.70 × 28,653.18
  4. Step 4: Simplify right side
    88,608.60x = 3,808,858,621.45
  5. Step 5: Solve for x
    x = 3,808,858,621.45/88,608.60
  6. Step 6: Final answer
    x = 42,985.20

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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.