Home / 53,942.10-80,913.15-18,885.30

Finding the Fourth Proportional to 53,942.10, 80,913.15 and 18,885.30

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Solution

The fourth proportional to 53,942.10, 80,913.15 and 18,885.30 is: 28,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,942.10 : 80,913.15 = 18,885.30 : x
  2. Step 2: Convert to fraction form
    53,942.10/80,913.15 = 18,885.30/x
  3. Step 3: Cross multiply
    53,942.10x = 80,913.15 × 18,885.30
  4. Step 4: Simplify right side
    53,942.10x = 1,528,069,111.70
  5. Step 5: Solve for x
    x = 1,528,069,111.70/53,942.10
  6. Step 6: Final answer
    x = 28,327.95

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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.