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Finding the Fourth Proportional to 79,240.64, 118,860.95 and 20,080.94

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Solution

The fourth proportional to 79,240.64, 118,860.95 and 20,080.94 is: 30,121.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,240.64 : 118,860.95 = 20,080.94 : x
  2. Step 2: Convert to fraction form
    79,240.64/118,860.95 = 20,080.94/x
  3. Step 3: Cross multiply
    79,240.64x = 118,860.95 × 20,080.94
  4. Step 4: Simplify right side
    79,240.64x = 2,386,839,061.19
  5. Step 5: Solve for x
    x = 2,386,839,061.19/79,240.64
  6. Step 6: Final answer
    x = 30,121.40

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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.