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Finding the Fourth Proportional to 105,033.72, 144,947.70 and 57,286.92

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Solution

The fourth proportional to 105,033.72, 144,947.70 and 57,286.92 is: 79,056.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,033.72 : 144,947.70 = 57,286.92 : x
  2. Step 2: Convert to fraction form
    105,033.72/144,947.70 = 57,286.92/x
  3. Step 3: Cross multiply
    105,033.72x = 144,947.70 × 57,286.92
  4. Step 4: Simplify right side
    105,033.72x = 8,303,607,294.08
  5. Step 5: Solve for x
    x = 8,303,607,294.08/105,033.72
  6. Step 6: Final answer
    x = 79,056.59

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1.5x scale

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.