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Finding the Fourth Proportional to 40,920.50, 61,380.50 and 10,525.58

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Solution

The fourth proportional to 40,920.50, 61,380.50 and 10,525.58 is: 15,788.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,920.50 : 61,380.50 = 10,525.58 : x
  2. Step 2: Convert to fraction form
    40,920.50/61,380.50 = 10,525.58/x
  3. Step 3: Cross multiply
    40,920.50x = 61,380.50 × 10,525.58
  4. Step 4: Simplify right side
    40,920.50x = 646,065,464.01
  5. Step 5: Solve for x
    x = 646,065,464.01/40,920.50
  6. Step 6: Final answer
    x = 15,788.31

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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.