Home / 53,150.40-79,725.60-28,180.80

Finding the Fourth Proportional to 53,150.40, 79,725.60 and 28,180.80

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Solution

The fourth proportional to 53,150.40, 79,725.60 and 28,180.80 is: 42,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,150.40 : 79,725.60 = 28,180.80 : x
  2. Step 2: Convert to fraction form
    53,150.40/79,725.60 = 28,180.80/x
  3. Step 3: Cross multiply
    53,150.40x = 79,725.60 × 28,180.80
  4. Step 4: Simplify right side
    53,150.40x = 2,246,731,188.48
  5. Step 5: Solve for x
    x = 2,246,731,188.48/53,150.40
  6. Step 6: Final answer
    x = 42,271.20

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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.