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Finding the Fourth Proportional to 103,038.56, 154,612.56 and 40,709.60

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Solution

The fourth proportional to 103,038.56, 154,612.56 and 40,709.60 is: 61,086.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,038.56 : 154,612.56 = 40,709.60 : x
  2. Step 2: Convert to fraction form
    103,038.56/154,612.56 = 40,709.60/x
  3. Step 3: Cross multiply
    103,038.56x = 154,612.56 × 40,709.60
  4. Step 4: Simplify right side
    103,038.56x = 6,294,215,472.58
  5. Step 5: Solve for x
    x = 6,294,215,472.58/103,038.56
  6. Step 6: Final answer
    x = 61,086.02

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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.