Home / 72,432.20-108,648.30-19,841.60

Finding the Fourth Proportional to 72,432.20, 108,648.30 and 19,841.60

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Solution

The fourth proportional to 72,432.20, 108,648.30 and 19,841.60 is: 29,762.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,432.20 : 108,648.30 = 19,841.60 : x
  2. Step 2: Convert to fraction form
    72,432.20/108,648.30 = 19,841.60/x
  3. Step 3: Cross multiply
    72,432.20x = 108,648.30 × 19,841.60
  4. Step 4: Simplify right side
    72,432.20x = 2,155,756,109.28
  5. Step 5: Solve for x
    x = 2,155,756,109.28/72,432.20
  6. Step 6: Final answer
    x = 29,762.40

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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.