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Finding the Fourth Proportional to 105,692.40, 145,855.47 and 57,944.72

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Solution

The fourth proportional to 105,692.40, 145,855.47 and 57,944.72 is: 79,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,692.40 : 145,855.47 = 57,944.72 : x
  2. Step 2: Convert to fraction form
    105,692.40/145,855.47 = 57,944.72/x
  3. Step 3: Cross multiply
    105,692.40x = 145,855.47 × 57,944.72
  4. Step 4: Simplify right side
    105,692.40x = 8,451,554,369.62
  5. Step 5: Solve for x
    x = 8,451,554,369.62/105,692.40
  6. Step 6: Final answer
    x = 79,963.69

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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.