Home / 40,890.24-61,335.29-12,812.45

Finding the Fourth Proportional to 40,890.24, 61,335.29 and 12,812.45

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Solution

The fourth proportional to 40,890.24, 61,335.29 and 12,812.45 is: 19,218.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,890.24 : 61,335.29 = 12,812.45 : x
  2. Step 2: Convert to fraction form
    40,890.24/61,335.29 = 12,812.45/x
  3. Step 3: Cross multiply
    40,890.24x = 61,335.29 × 12,812.45
  4. Step 4: Simplify right side
    40,890.24x = 785,855,137.04
  5. Step 5: Solve for x
    x = 785,855,137.04/40,890.24
  6. Step 6: Final answer
    x = 19,218.65

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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.