Home / 79,280.43-109,406.16-43,470.36

Finding the Fourth Proportional to 79,280.43, 109,406.16 and 43,470.36

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Solution

The fourth proportional to 79,280.43, 109,406.16 and 43,470.36 is: 59,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,280.43 : 109,406.16 = 43,470.36 : x
  2. Step 2: Convert to fraction form
    79,280.43/109,406.16 = 43,470.36/x
  3. Step 3: Cross multiply
    79,280.43x = 109,406.16 × 43,470.36
  4. Step 4: Simplify right side
    79,280.43x = 4,755,925,161.42
  5. Step 5: Solve for x
    x = 4,755,925,161.42/79,280.43
  6. Step 6: Final answer
    x = 59,988.64

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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.