Home / 105,583.63-145,705.45-57,838.70

Finding the Fourth Proportional to 105,583.63, 145,705.45 and 57,838.70

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Solution

The fourth proportional to 105,583.63, 145,705.45 and 57,838.70 is: 79,817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,583.63 : 145,705.45 = 57,838.70 : x
  2. Step 2: Convert to fraction form
    105,583.63/145,705.45 = 57,838.70/x
  3. Step 3: Cross multiply
    105,583.63x = 145,705.45 × 57,838.70
  4. Step 4: Simplify right side
    105,583.63x = 8,427,413,810.92
  5. Step 5: Solve for x
    x = 8,427,413,810.92/105,583.63
  6. Step 6: Final answer
    x = 79,817.43

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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.