Home / 81,491.61-112,458.27-45,681.66

Finding the Fourth Proportional to 81,491.61, 112,458.27 and 45,681.66

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Solution

The fourth proportional to 81,491.61, 112,458.27 and 45,681.66 is: 63,040.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,491.61 : 112,458.27 = 45,681.66 : x
  2. Step 2: Convert to fraction form
    81,491.61/112,458.27 = 45,681.66/x
  3. Step 3: Cross multiply
    81,491.61x = 112,458.27 × 45,681.66
  4. Step 4: Simplify right side
    81,491.61x = 5,137,280,454.33
  5. Step 5: Solve for x
    x = 5,137,280,454.33/81,491.61
  6. Step 6: Final answer
    x = 63,040.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.