Home / 105,583.91-145,705.82-57,838.95

Finding the Fourth Proportional to 105,583.91, 145,705.82 and 57,838.95

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Solution

The fourth proportional to 105,583.91, 145,705.82 and 57,838.95 is: 79,817.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,583.91 : 145,705.82 = 57,838.95 : x
  2. Step 2: Convert to fraction form
    105,583.91/145,705.82 = 57,838.95/x
  3. Step 3: Cross multiply
    105,583.91x = 145,705.82 × 57,838.95
  4. Step 4: Simplify right side
    105,583.91x = 8,427,471,348.49
  5. Step 5: Solve for x
    x = 8,427,471,348.49/105,583.91
  6. Step 6: Final answer
    x = 79,817.77

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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.