Home / 72,041.20-99,416.97-40,210.09

Finding the Fourth Proportional to 72,041.20, 99,416.97 and 40,210.09

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Solution

The fourth proportional to 72,041.20, 99,416.97 and 40,210.09 is: 55,489.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,041.20 : 99,416.97 = 40,210.09 : x
  2. Step 2: Convert to fraction form
    72,041.20/99,416.97 = 40,210.09/x
  3. Step 3: Cross multiply
    72,041.20x = 99,416.97 × 40,210.09
  4. Step 4: Simplify right side
    72,041.20x = 3,997,565,311.23
  5. Step 5: Solve for x
    x = 3,997,565,311.23/72,041.20
  6. Step 6: Final answer
    x = 55,489.99

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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.