Home / 51,421.48-70,961.43-28,760.38

Finding the Fourth Proportional to 51,421.48, 70,961.43 and 28,760.38

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Solution

The fourth proportional to 51,421.48, 70,961.43 and 28,760.38 is: 39,689.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,421.48 : 70,961.43 = 28,760.38 : x
  2. Step 2: Convert to fraction form
    51,421.48/70,961.43 = 28,760.38/x
  3. Step 3: Cross multiply
    51,421.48x = 70,961.43 × 28,760.38
  4. Step 4: Simplify right side
    51,421.48x = 2,040,877,692.14
  5. Step 5: Solve for x
    x = 2,040,877,692.14/51,421.48
  6. Step 6: Final answer
    x = 39,689.21

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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.