Home / 81,386.94-112,315.11-45,576.63

Finding the Fourth Proportional to 81,386.94, 112,315.11 and 45,576.63

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Solution

The fourth proportional to 81,386.94, 112,315.11 and 45,576.63 is: 62,896.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,386.94 : 112,315.11 = 45,576.63 : x
  2. Step 2: Convert to fraction form
    81,386.94/112,315.11 = 45,576.63/x
  3. Step 3: Cross multiply
    81,386.94x = 112,315.11 × 45,576.63
  4. Step 4: Simplify right side
    81,386.94x = 5,118,944,211.88
  5. Step 5: Solve for x
    x = 5,118,944,211.88/81,386.94
  6. Step 6: Final answer
    x = 62,896.38

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Half scale
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Double scale
Find fourth proportional to 81,387.94, 112,316.49 and 45,577.63
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1.5x scale

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.