Home / 45,423.87-68,130.61-12,146.53

Finding the Fourth Proportional to 45,423.87, 68,130.61 and 12,146.53

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Solution

The fourth proportional to 45,423.87, 68,130.61 and 12,146.53 is: 18,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,423.87 : 68,130.61 = 12,146.53 : x
  2. Step 2: Convert to fraction form
    45,423.87/68,130.61 = 12,146.53/x
  3. Step 3: Cross multiply
    45,423.87x = 68,130.61 × 12,146.53
  4. Step 4: Simplify right side
    45,423.87x = 827,550,421.69
  5. Step 5: Solve for x
    x = 827,550,421.69/45,423.87
  6. Step 6: Final answer
    x = 18,218.40

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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.