Home / 72,035.41-99,414.50-40,209.10

Finding the Fourth Proportional to 72,035.41, 99,414.50 and 40,209.10

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Solution

The fourth proportional to 72,035.41, 99,414.50 and 40,209.10 is: 55,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035.41 : 99,414.50 = 40,209.10 : x
  2. Step 2: Convert to fraction form
    72,035.41/99,414.50 = 40,209.10/x
  3. Step 3: Cross multiply
    72,035.41x = 99,414.50 × 40,209.10
  4. Step 4: Simplify right side
    72,035.41x = 3,997,367,571.95
  5. Step 5: Solve for x
    x = 3,997,367,571.95/72,035.41
  6. Step 6: Final answer
    x = 55,491.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.