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Finding the Fourth Proportional to 72,298.48, 99,774 and 40,466.56

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Solution

The fourth proportional to 72,298.48, 99,774 and 40,466.56 is: 55,845.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,298.48 : 99,774 = 40,466.56 : x
  2. Step 2: Convert to fraction form
    72,298.48/99,774 = 40,466.56/x
  3. Step 3: Cross multiply
    72,298.48x = 99,774 × 40,466.56
  4. Step 4: Simplify right side
    72,298.48x = 4,037,510,557.44
  5. Step 5: Solve for x
    x = 4,037,510,557.44/72,298.48
  6. Step 6: Final answer
    x = 55,845.03

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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.