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Finding the Fourth Proportional to 39,810.80, 59,716.20 and 32,812.40

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Solution

The fourth proportional to 39,810.80, 59,716.20 and 32,812.40 is: 49,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,810.80 : 59,716.20 = 32,812.40 : x
  2. Step 2: Convert to fraction form
    39,810.80/59,716.20 = 32,812.40/x
  3. Step 3: Cross multiply
    39,810.80x = 59,716.20 × 32,812.40
  4. Step 4: Simplify right side
    39,810.80x = 1,959,431,840.88
  5. Step 5: Solve for x
    x = 1,959,431,840.88/39,810.80
  6. Step 6: Final answer
    x = 49,218.60

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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.