Home / 60,303.60-90,439.20-20,872.80

Finding the Fourth Proportional to 60,303.60, 90,439.20 and 20,872.80

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Solution

The fourth proportional to 60,303.60, 90,439.20 and 20,872.80 is: 31,303.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,303.60 : 90,439.20 = 20,872.80 : x
  2. Step 2: Convert to fraction form
    60,303.60/90,439.20 = 20,872.80/x
  3. Step 3: Cross multiply
    60,303.60x = 90,439.20 × 20,872.80
  4. Step 4: Simplify right side
    60,303.60x = 1,887,719,333.76
  5. Step 5: Solve for x
    x = 1,887,719,333.76/60,303.60
  6. Step 6: Final answer
    x = 31,303.59

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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.