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Finding the Fourth Proportional to 74,892.90, 103,350.60 and 40,900.08

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Solution

The fourth proportional to 74,892.90, 103,350.60 and 40,900.08 is: 56,441.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,892.90 : 103,350.60 = 40,900.08 : x
  2. Step 2: Convert to fraction form
    74,892.90/103,350.60 = 40,900.08/x
  3. Step 3: Cross multiply
    74,892.90x = 103,350.60 × 40,900.08
  4. Step 4: Simplify right side
    74,892.90x = 4,227,047,808.05
  5. Step 5: Solve for x
    x = 4,227,047,808.05/74,892.90
  6. Step 6: Final answer
    x = 56,441.24

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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.