Home / 72,616.16-100,211.58-40,353.72

Finding the Fourth Proportional to 72,616.16, 100,211.58 and 40,353.72

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Solution

The fourth proportional to 72,616.16, 100,211.58 and 40,353.72 is: 55,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,616.16 : 100,211.58 = 40,353.72 : x
  2. Step 2: Convert to fraction form
    72,616.16/100,211.58 = 40,353.72/x
  3. Step 3: Cross multiply
    72,616.16x = 100,211.58 × 40,353.72
  4. Step 4: Simplify right side
    72,616.16x = 4,043,910,040.08
  5. Step 5: Solve for x
    x = 4,043,910,040.08/72,616.16
  6. Step 6: Final answer
    x = 55,688.85

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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.