Home / 56,439.20-84,658.80-28,445.60

Finding the Fourth Proportional to 56,439.20, 84,658.80 and 28,445.60

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Solution

The fourth proportional to 56,439.20, 84,658.80 and 28,445.60 is: 42,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,439.20 : 84,658.80 = 28,445.60 : x
  2. Step 2: Convert to fraction form
    56,439.20/84,658.80 = 28,445.60/x
  3. Step 3: Cross multiply
    56,439.20x = 84,658.80 × 28,445.60
  4. Step 4: Simplify right side
    56,439.20x = 2,408,170,361.28
  5. Step 5: Solve for x
    x = 2,408,170,361.28/56,439.20
  6. Step 6: Final answer
    x = 42,668.40

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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.