Home / 45,141.36-67,711.32-12,309.36

Finding the Fourth Proportional to 45,141.36, 67,711.32 and 12,309.36

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Solution

The fourth proportional to 45,141.36, 67,711.32 and 12,309.36 is: 18,463.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,141.36 : 67,711.32 = 12,309.36 : x
  2. Step 2: Convert to fraction form
    45,141.36/67,711.32 = 12,309.36/x
  3. Step 3: Cross multiply
    45,141.36x = 67,711.32 × 12,309.36
  4. Step 4: Simplify right side
    45,141.36x = 833,483,013.96
  5. Step 5: Solve for x
    x = 833,483,013.96/45,141.36
  6. Step 6: Final answer
    x = 18,463.84

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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.