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Finding the Fourth Proportional to 43,406.40, 65,248.80 and 40,324.80

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Solution

The fourth proportional to 43,406.40, 65,248.80 and 40,324.80 is: 60,616.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,406.40 : 65,248.80 = 40,324.80 : x
  2. Step 2: Convert to fraction form
    43,406.40/65,248.80 = 40,324.80/x
  3. Step 3: Cross multiply
    43,406.40x = 65,248.80 × 40,324.80
  4. Step 4: Simplify right side
    43,406.40x = 2,631,144,810.24
  5. Step 5: Solve for x
    x = 2,631,144,810.24/43,406.40
  6. Step 6: Final answer
    x = 60,616.52

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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.