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Finding the Fourth Proportional to 59,679.80, 89,519.70 and 28,070.21

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Solution

The fourth proportional to 59,679.80, 89,519.70 and 28,070.21 is: 42,105.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,679.80 : 89,519.70 = 28,070.21 : x
  2. Step 2: Convert to fraction form
    59,679.80/89,519.70 = 28,070.21/x
  3. Step 3: Cross multiply
    59,679.80x = 89,519.70 × 28,070.21
  4. Step 4: Simplify right side
    59,679.80x = 2,512,836,778.14
  5. Step 5: Solve for x
    x = 2,512,836,778.14/59,679.80
  6. Step 6: Final answer
    x = 42,105.32

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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.