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Finding the Fourth Proportional to 52,763.40, 79,029.90 and 40,984.20

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Solution

The fourth proportional to 52,763.40, 79,029.90 and 40,984.20 is: 61,386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,763.40 : 79,029.90 = 40,984.20 : x
  2. Step 2: Convert to fraction form
    52,763.40/79,029.90 = 40,984.20/x
  3. Step 3: Cross multiply
    52,763.40x = 79,029.90 × 40,984.20
  4. Step 4: Simplify right side
    52,763.40x = 3,238,977,227.58
  5. Step 5: Solve for x
    x = 3,238,977,227.58/52,763.40
  6. Step 6: Final answer
    x = 61,386.82

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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.