Home / 81,328.49-112,236.82-45,029.93

Finding the Fourth Proportional to 81,328.49, 112,236.82 and 45,029.93

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Solution

The fourth proportional to 81,328.49, 112,236.82 and 45,029.93 is: 62,143.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328.49 : 112,236.82 = 45,029.93 : x
  2. Step 2: Convert to fraction form
    81,328.49/112,236.82 = 45,029.93/x
  3. Step 3: Cross multiply
    81,328.49x = 112,236.82 × 45,029.93
  4. Step 4: Simplify right side
    81,328.49x = 5,054,015,916.10
  5. Step 5: Solve for x
    x = 5,054,015,916.10/81,328.49
  6. Step 6: Final answer
    x = 62,143.24

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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.