Home / 43,515.20-65,272.80-28,740.80

Finding the Fourth Proportional to 43,515.20, 65,272.80 and 28,740.80

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Solution

The fourth proportional to 43,515.20, 65,272.80 and 28,740.80 is: 43,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,515.20 : 65,272.80 = 28,740.80 : x
  2. Step 2: Convert to fraction form
    43,515.20/65,272.80 = 28,740.80/x
  3. Step 3: Cross multiply
    43,515.20x = 65,272.80 × 28,740.80
  4. Step 4: Simplify right side
    43,515.20x = 1,875,992,490.24
  5. Step 5: Solve for x
    x = 1,875,992,490.24/43,515.20
  6. Step 6: Final answer
    x = 43,111.20

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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.