Home / 72,436.16-99,960.64-40,170.56

Finding the Fourth Proportional to 72,436.16, 99,960.64 and 40,170.56

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Solution

The fourth proportional to 72,436.16, 99,960.64 and 40,170.56 is: 55,434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,436.16 : 99,960.64 = 40,170.56 : x
  2. Step 2: Convert to fraction form
    72,436.16/99,960.64 = 40,170.56/x
  3. Step 3: Cross multiply
    72,436.16x = 99,960.64 × 40,170.56
  4. Step 4: Simplify right side
    72,436.16x = 4,015,474,886.76
  5. Step 5: Solve for x
    x = 4,015,474,886.76/72,436.16
  6. Step 6: Final answer
    x = 55,434.67

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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.