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Finding the Fourth Proportional to 44,280.80, 66,421.20 and 39,906.80

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Solution

The fourth proportional to 44,280.80, 66,421.20 and 39,906.80 is: 59,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,280.80 : 66,421.20 = 39,906.80 : x
  2. Step 2: Convert to fraction form
    44,280.80/66,421.20 = 39,906.80/x
  3. Step 3: Cross multiply
    44,280.80x = 66,421.20 × 39,906.80
  4. Step 4: Simplify right side
    44,280.80x = 2,650,657,544.16
  5. Step 5: Solve for x
    x = 2,650,657,544.16/44,280.80
  6. Step 6: Final answer
    x = 59,860.20

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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.