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Finding the Fourth Proportional to 80,746, 121,123.32 and 25,346.32

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Solution

The fourth proportional to 80,746, 121,123.32 and 25,346.32 is: 38,020.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,746 : 121,123.32 = 25,346.32 : x
  2. Step 2: Convert to fraction form
    80,746/121,123.32 = 25,346.32/x
  3. Step 3: Cross multiply
    80,746x = 121,123.32 × 25,346.32
  4. Step 4: Simplify right side
    80,746x = 3,070,030,428.18
  5. Step 5: Solve for x
    x = 3,070,030,428.18/80,746
  6. Step 6: Final answer
    x = 38,020.84

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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.