Home / 51,381.20-77,075.40-21,795.68

Finding the Fourth Proportional to 51,381.20, 77,075.40 and 21,795.68

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Solution

The fourth proportional to 51,381.20, 77,075.40 and 21,795.68 is: 32,695.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,381.20 : 77,075.40 = 21,795.68 : x
  2. Step 2: Convert to fraction form
    51,381.20/77,075.40 = 21,795.68/x
  3. Step 3: Cross multiply
    51,381.20x = 77,075.40 × 21,795.68
  4. Step 4: Simplify right side
    51,381.20x = 1,679,910,754.27
  5. Step 5: Solve for x
    x = 1,679,910,754.27/51,381.20
  6. Step 6: Final answer
    x = 32,695.05

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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.