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Finding the Fourth Proportional to 40,999.20, 61,498.80 and 28,492.80

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Solution

The fourth proportional to 40,999.20, 61,498.80 and 28,492.80 is: 42,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,999.20 : 61,498.80 = 28,492.80 : x
  2. Step 2: Convert to fraction form
    40,999.20/61,498.80 = 28,492.80/x
  3. Step 3: Cross multiply
    40,999.20x = 61,498.80 × 28,492.80
  4. Step 4: Simplify right side
    40,999.20x = 1,752,273,008.64
  5. Step 5: Solve for x
    x = 1,752,273,008.64/40,999.20
  6. Step 6: Final answer
    x = 42,739.20

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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.