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Finding the Fourth Proportional to 72,787.73, 100,441.60 and 40,950.47

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Solution

The fourth proportional to 72,787.73, 100,441.60 and 40,950.47 is: 56,508.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,787.73 : 100,441.60 = 40,950.47 : x
  2. Step 2: Convert to fraction form
    72,787.73/100,441.60 = 40,950.47/x
  3. Step 3: Cross multiply
    72,787.73x = 100,441.60 × 40,950.47
  4. Step 4: Simplify right side
    72,787.73x = 4,113,130,876.28
  5. Step 5: Solve for x
    x = 4,113,130,876.28/72,787.73
  6. Step 6: Final answer
    x = 56,508.58

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1.5x scale

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.