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Finding the Fourth Proportional to 81,674.08, 112,696.00 and 45,369.72

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Solution

The fourth proportional to 81,674.08, 112,696.00 and 45,369.72 is: 62,602.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.08 : 112,696.00 = 45,369.72 : x
  2. Step 2: Convert to fraction form
    81,674.08/112,696.00 = 45,369.72/x
  3. Step 3: Cross multiply
    81,674.08x = 112,696.00 × 45,369.72
  4. Step 4: Simplify right side
    81,674.08x = 5,112,985,851.70
  5. Step 5: Solve for x
    x = 5,112,985,851.70/81,674.08
  6. Step 6: Final answer
    x = 62,602.31

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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.