Home / 30,899,183.28-42,636,512.40-18,506,372.88

Finding the Fourth Proportional to 30,899,183.28, 42,636,512.40 and 18,506,372.88

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Solution

The fourth proportional to 30,899,183.28, 42,636,512.40 and 18,506,372.88 is: 25,536,182.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899,183.28 : 42,636,512.40 = 18,506,372.88 : x
  2. Step 2: Convert to fraction form
    30,899,183.28/42,636,512.40 = 18,506,372.88/x
  3. Step 3: Cross multiply
    30,899,183.28x = 42,636,512.40 × 18,506,372.88
  4. Step 4: Simplify right side
    30,899,183.28x = 789,047,196,777,143.62
  5. Step 5: Solve for x
    x = 789,047,196,777,143.62/30,899,183.28
  6. Step 6: Final answer
    x = 25,536,182.93

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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.