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Finding the Fourth Proportional to 74,499.60, 111,748.44 and 18,340.40

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Solution

The fourth proportional to 74,499.60, 111,748.44 and 18,340.40 is: 27,510.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,499.60 : 111,748.44 = 18,340.40 : x
  2. Step 2: Convert to fraction form
    74,499.60/111,748.44 = 18,340.40/x
  3. Step 3: Cross multiply
    74,499.60x = 111,748.44 × 18,340.40
  4. Step 4: Simplify right side
    74,499.60x = 2,049,511,088.98
  5. Step 5: Solve for x
    x = 2,049,511,088.98/74,499.60
  6. Step 6: Final answer
    x = 27,510.36

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1.5x scale

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.