Home / 45,111.76-67,646.88-18,800.80

Finding the Fourth Proportional to 45,111.76, 67,646.88 and 18,800.80

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Solution

The fourth proportional to 45,111.76, 67,646.88 and 18,800.80 is: 28,192.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,111.76 : 67,646.88 = 18,800.80 : x
  2. Step 2: Convert to fraction form
    45,111.76/67,646.88 = 18,800.80/x
  3. Step 3: Cross multiply
    45,111.76x = 67,646.88 × 18,800.80
  4. Step 4: Simplify right side
    45,111.76x = 1,271,815,461.50
  5. Step 5: Solve for x
    x = 1,271,815,461.50/45,111.76
  6. Step 6: Final answer
    x = 28,192.55

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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.