Home / 72,416.94-99,929.88-40,579.68

Finding the Fourth Proportional to 72,416.94, 99,929.88 and 40,579.68

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Solution

The fourth proportional to 72,416.94, 99,929.88 and 40,579.68 is: 55,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,416.94 : 99,929.88 = 40,579.68 : x
  2. Step 2: Convert to fraction form
    72,416.94/99,929.88 = 40,579.68/x
  3. Step 3: Cross multiply
    72,416.94x = 99,929.88 × 40,579.68
  4. Step 4: Simplify right side
    72,416.94x = 4,055,122,552.84
  5. Step 5: Solve for x
    x = 4,055,122,552.84/72,416.94
  6. Step 6: Final answer
    x = 55,996.88

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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.