Home / 45,118.16-67,650.68-21,075.92

Finding the Fourth Proportional to 45,118.16, 67,650.68 and 21,075.92

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Solution

The fourth proportional to 45,118.16, 67,650.68 and 21,075.92 is: 31,601.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,118.16 : 67,650.68 = 21,075.92 : x
  2. Step 2: Convert to fraction form
    45,118.16/67,650.68 = 21,075.92/x
  3. Step 3: Cross multiply
    45,118.16x = 67,650.68 × 21,075.92
  4. Step 4: Simplify right side
    45,118.16x = 1,425,800,319.63
  5. Step 5: Solve for x
    x = 1,425,800,319.63/45,118.16
  6. Step 6: Final answer
    x = 31,601.47

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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.