Home / 45,939.93-68,903.61-12,655.20

Finding the Fourth Proportional to 45,939.93, 68,903.61 and 12,655.20

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Solution

The fourth proportional to 45,939.93, 68,903.61 and 12,655.20 is: 18,981.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,939.93 : 68,903.61 = 12,655.20 : x
  2. Step 2: Convert to fraction form
    45,939.93/68,903.61 = 12,655.20/x
  3. Step 3: Cross multiply
    45,939.93x = 68,903.61 × 12,655.20
  4. Step 4: Simplify right side
    45,939.93x = 871,989,247.39
  5. Step 5: Solve for x
    x = 871,989,247.39/45,939.93
  6. Step 6: Final answer
    x = 18,981.08

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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.