Home / 72,011.01-99,374.79-40,179.83

Finding the Fourth Proportional to 72,011.01, 99,374.79 and 40,179.83

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Solution

The fourth proportional to 72,011.01, 99,374.79 and 40,179.83 is: 55,447.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,011.01 : 99,374.79 = 40,179.83 : x
  2. Step 2: Convert to fraction form
    72,011.01/99,374.79 = 40,179.83/x
  3. Step 3: Cross multiply
    72,011.01x = 99,374.79 × 40,179.83
  4. Step 4: Simplify right side
    72,011.01x = 3,992,861,671.61
  5. Step 5: Solve for x
    x = 3,992,861,671.61/72,011.01
  6. Step 6: Final answer
    x = 55,447.93

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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.