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Finding the Fourth Proportional to 72,763.65, 108,942.65 and 37,148.35

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Solution

The fourth proportional to 72,763.65, 108,942.65 and 37,148.35 is: 55,618.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,763.65 : 108,942.65 = 37,148.35 : x
  2. Step 2: Convert to fraction form
    72,763.65/108,942.65 = 37,148.35/x
  3. Step 3: Cross multiply
    72,763.65x = 108,942.65 × 37,148.35
  4. Step 4: Simplify right side
    72,763.65x = 4,047,039,692.13
  5. Step 5: Solve for x
    x = 4,047,039,692.13/72,763.65
  6. Step 6: Final answer
    x = 55,618.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.