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Finding the Fourth Proportional to 81,737.76, 112,808.19 and 45,927

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Solution

The fourth proportional to 81,737.76, 112,808.19 and 45,927 is: 63,384.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737.76 : 112,808.19 = 45,927 : x
  2. Step 2: Convert to fraction form
    81,737.76/112,808.19 = 45,927/x
  3. Step 3: Cross multiply
    81,737.76x = 112,808.19 × 45,927
  4. Step 4: Simplify right side
    81,737.76x = 5,180,941,914.36
  5. Step 5: Solve for x
    x = 5,180,941,914.36/81,737.76
  6. Step 6: Final answer
    x = 63,384.93

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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.