Home / 40,890.36-61,335.52-12,810.64

Finding the Fourth Proportional to 40,890.36, 61,335.52 and 12,810.64

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Solution

The fourth proportional to 40,890.36, 61,335.52 and 12,810.64 is: 19,215.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,890.36 : 61,335.52 = 12,810.64 : x
  2. Step 2: Convert to fraction form
    40,890.36/61,335.52 = 12,810.64/x
  3. Step 3: Cross multiply
    40,890.36x = 61,335.52 × 12,810.64
  4. Step 4: Simplify right side
    40,890.36x = 785,747,265.93
  5. Step 5: Solve for x
    x = 785,747,265.93/40,890.36
  6. Step 6: Final answer
    x = 19,215.95

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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.