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Finding the Fourth Proportional to 73,878.12, 110,817.18 and 18,474.12

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Solution

The fourth proportional to 73,878.12, 110,817.18 and 18,474.12 is: 27,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,878.12 : 110,817.18 = 18,474.12 : x
  2. Step 2: Convert to fraction form
    73,878.12/110,817.18 = 18,474.12/x
  3. Step 3: Cross multiply
    73,878.12x = 110,817.18 × 18,474.12
  4. Step 4: Simplify right side
    73,878.12x = 2,047,249,881.38
  5. Step 5: Solve for x
    x = 2,047,249,881.38/73,878.12
  6. Step 6: Final answer
    x = 27,711.18

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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.