Home / 45,938.10-68,903.10-12,655.20

Finding the Fourth Proportional to 45,938.10, 68,903.10 and 12,655.20

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Solution

The fourth proportional to 45,938.10, 68,903.10 and 12,655.20 is: 18,981.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,938.10 : 68,903.10 = 12,655.20 : x
  2. Step 2: Convert to fraction form
    45,938.10/68,903.10 = 12,655.20/x
  3. Step 3: Cross multiply
    45,938.10x = 68,903.10 × 12,655.20
  4. Step 4: Simplify right side
    45,938.10x = 871,982,511.12
  5. Step 5: Solve for x
    x = 871,982,511.12/45,938.10
  6. Step 6: Final answer
    x = 18,981.68

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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.