Home / 72,458.93-99,999.12-40,196.73

Finding the Fourth Proportional to 72,458.93, 99,999.12 and 40,196.73

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Solution

The fourth proportional to 72,458.93, 99,999.12 and 40,196.73 is: 55,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,458.93 : 99,999.12 = 40,196.73 : x
  2. Step 2: Convert to fraction form
    72,458.93/99,999.12 = 40,196.73/x
  3. Step 3: Cross multiply
    72,458.93x = 99,999.12 × 40,196.73
  4. Step 4: Simplify right side
    72,458.93x = 4,019,638,152.61
  5. Step 5: Solve for x
    x = 4,019,638,152.61/72,458.93
  6. Step 6: Final answer
    x = 55,474.71

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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.