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Finding the Fourth Proportional to 57,402.80, 86,104.20 and 44,280.80

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Solution

The fourth proportional to 57,402.80, 86,104.20 and 44,280.80 is: 66,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,402.80 : 86,104.20 = 44,280.80 : x
  2. Step 2: Convert to fraction form
    57,402.80/86,104.20 = 44,280.80/x
  3. Step 3: Cross multiply
    57,402.80x = 86,104.20 × 44,280.80
  4. Step 4: Simplify right side
    57,402.80x = 3,812,762,859.36
  5. Step 5: Solve for x
    x = 3,812,762,859.36/57,402.80
  6. Step 6: Final answer
    x = 66,421.20

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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.