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Finding the Fourth Proportional to 71,775.65, 107,622.44 and 21,840.98

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Solution

The fourth proportional to 71,775.65, 107,622.44 and 21,840.98 is: 32,748.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,775.65 : 107,622.44 = 21,840.98 : x
  2. Step 2: Convert to fraction form
    71,775.65/107,622.44 = 21,840.98/x
  3. Step 3: Cross multiply
    71,775.65x = 107,622.44 × 21,840.98
  4. Step 4: Simplify right side
    71,775.65x = 2,350,579,076.08
  5. Step 5: Solve for x
    x = 2,350,579,076.08/71,775.65
  6. Step 6: Final answer
    x = 32,748.98

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1.5x scale

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.