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Finding the Fourth Proportional to 74,615.60, 102,968.90 and 40,624.01

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Solution

The fourth proportional to 74,615.60, 102,968.90 and 40,624.01 is: 56,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,615.60 : 102,968.90 = 40,624.01 : x
  2. Step 2: Convert to fraction form
    74,615.60/102,968.90 = 40,624.01/x
  3. Step 3: Cross multiply
    74,615.60x = 102,968.90 × 40,624.01
  4. Step 4: Simplify right side
    74,615.60x = 4,183,009,982.27
  5. Step 5: Solve for x
    x = 4,183,009,982.27/74,615.60
  6. Step 6: Final answer
    x = 56,060.80

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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.