Home / 72,115.76-99,512.60-40,283.98

Finding the Fourth Proportional to 72,115.76, 99,512.60 and 40,283.98

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Solution

The fourth proportional to 72,115.76, 99,512.60 and 40,283.98 is: 55,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.76 : 99,512.60 = 40,283.98 : x
  2. Step 2: Convert to fraction form
    72,115.76/99,512.60 = 40,283.98/x
  3. Step 3: Cross multiply
    72,115.76x = 99,512.60 × 40,283.98
  4. Step 4: Simplify right side
    72,115.76x = 4,008,763,588.15
  5. Step 5: Solve for x
    x = 4,008,763,588.15/72,115.76
  6. Step 6: Final answer
    x = 55,587.90

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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.