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Finding the Fourth Proportional to 74,099.89, 102,257.85 and 40,565.89

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Solution

The fourth proportional to 74,099.89, 102,257.85 and 40,565.89 is: 55,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,099.89 : 102,257.85 = 40,565.89 : x
  2. Step 2: Convert to fraction form
    74,099.89/102,257.85 = 40,565.89/x
  3. Step 3: Cross multiply
    74,099.89x = 102,257.85 × 40,565.89
  4. Step 4: Simplify right side
    74,099.89x = 4,148,179,980.62
  5. Step 5: Solve for x
    x = 4,148,179,980.62/74,099.89
  6. Step 6: Final answer
    x = 55,980.92

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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.